5/16" Nuts

5/16-18Heavy Hex Nut Zinc Plated [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

Where heavy clamping pressures and vibrations could cause trouble, the wide face surface of Jergens Stainless Steel Flange Nuts holds through with greater friction. Features, Benefits, & Product Specifications: Material: 303 Stainless Steel [See More]

• Size: 5/16"; 5/16-18
• Material: Stainless Steel; 303 Stainless Steel

• Type: Flange Nut

Part Number: 1472. Finish/Plating: Nickel Plate. Material: Brass. OD: .375 [9.5]. Thread: 5/16-32 [See More]

• Size: 5/16"
• Finish: Nickel Plated

• Material: Bronze

ALL METAL LOCK NUTS. Dimensions per IFI-100/107. Crowned top. Nylon inserts and Nuts with patches also available as an option on the Request for Information form. Other materials and finishes available. For further information, call or send an information request. In conjunction with our selection... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"
• Material: Steel

• Type: Hex Nut; Nylon Insert Nut (optional feature); Locknut; Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Zinc Plated; Zinc Chromate; Cadmium & Wax

ZAGO ’s acorn sealing nuts are used in situations in which leakage, vibration, or environmental forces cause ordinary nuts to fail. Our acorn sealing nuts are not ordinary nuts; they are engineered with an advanced feature, a rubber fixture, which has been permanently bonded with the threading... [See More]

• Size: #0; #1; #2; #4; #6; #8; #10; #12; 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; M1.6; M2; M2.5; M3; M3.5; M4; M5; M6; M8; M10; M12; M14; M16; M18; M20; M22; M24; M27; M30
• Material: Steel; Stainless Steel

• Type: Acorn Nut
• Finish: Black Oxide; Zinc Plated; Black Zinc, Cadmium

Clinch Nuts [See More]

• Size: 5/16"; 0.313-18 (5/16-18)
• Material: Stainless Steel

• Type: Self-Clinching Nut

Meets torque requirements for IFI 100/107 Grade B (unified) and ANSI B18.16.1M (metric) locknuts. Type H is for use in sheet hardness HRB 80 or less on the Rockwell “B ” scale. Type HN and HNL are for use in sheet hardness HRB 60 or less on the Rockwell “B ” scale. [See More]

• Size: #5; 5/16"
• Material: Steel

• Type: Nuts Types H, HN, HNL - Unified
• Finish: Zinc Plated

5/16-18 Grade 2H Heavy Hex Nut Zinc [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

Part Number: 4716. Finish/Plating: Zinc & Clear Chromate. Material: Steel. OD: .500 [12.7]. Thread: 5/16-24 [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Material: Steel

COUPLING NUTS. Regular width across flats. Commonly used with Threaded Rod. Nylon inserts and Nuts with patches also available as an option on the information request form. Other materials and finishes available. For further information, call or send an information request. In conjunction with our... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/4"; 1 1/2"
• Material: Steel

• Type: Coupling Nut; Nylon Insert Nut (optional feature); Locknut (optional feature); Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Zinc Plated

AGO ’s Hex Flange Sealing Nuts are powerful pieces of hardware which create superb seals. If your equipment is exposed to high pressure, contamination, or vibration, then protect it with ZAGO ’s hex flange sealing nuts. Our hex flange sealing nuts are unique because they are designed... [See More]

• Size: #0; #1; #2; #4; #6; #8; #10; #12; 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; M1.6; M2; M2.5; M3; M3.5; M4; M5; M6; M8; M10; M12; M14; M16; M18; M20; M22; M24; M27; M30
• Material: Steel; Stainless Steel

• Type: Hex Nut
• Finish: Black Oxide; Zinc Plated; Black Zinc, Cadmium

Clinch Nuts [See More]

• Size: 5/16"; 0.313-18 (5/16-18)
• Material: Steel

• Type: Self-Clinching Nut

Engineered to Eliminate Vibration Loosening. In high-vibration environments, traditional locking methods present compromises. Nylon inserts degrade, lock washers lose effectiveness, and thread adhesives need time-consuming application. As vibration cycles grow, these fastening solutions can... [See More]

• Size: #4; #6; #8; #10; 1/4"; 5/16"; M3; M4; M5; M6; M8
• Material: Hardened Steel

• Type: Self-Clinching Nut; Locknut
• Finish: Zinc Plated

5/16-24 Finished Hex Nut Zinc [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

HEAVY HEX JAM NUTS. Dimensions per ANSI B18.2.2. Nylon inserts and Nuts with patches also available as an option on the Request for Information form. Other materials and finishes available. For further information, call or send an information request. In conjunction with our selection of bolts and... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"; 2 1/4"; 2 1/2"; 2 3/4"; Size Range: 1/4" - 3-1/2", Fine and Course Threads
• Material: Steel

• Type: Hex Nut; Nylon Insert Nut (optional feature); Locknut; Jam Nut; Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Pain

ZAGO ’s hex sealing nuts are designed to withstand extreme pressure, and to form a complete seal along the threading of your bolt. Where liquids, gas, and contamination are present, it is crucial to use ZAGO ’s hex sealing nuts rather than ordinary nuts to ensure optimal performance from... [See More]

• Size: #0; #1; #2; #4; #6; #8; #10; #12; 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; M1.6; M2; M2.5; M3; M3.5; M4; M5; M6; M8; M10; M12; M14; M16; M18; M20; M22; M24; M27; M30
• Material: Steel; Stainless Steel

• Type: Hex Nut
• Finish: Black Oxide; Zinc Plated; Black Zinc, Cadmium

Lock Nuts [See More]

• Size: 5/16"; 5/16-18

• Type: Locknut

PEM ® S-RT ™ free-running locknuts are free-running until clamp load is induced. A modified thread angle on the loaded flank provides the vibration resistant locking feature. Screw turns freely until a clamp load is applied. Resistant to vibrational loosening. Back side of panel is flush... [See More]

• Size: #4; #6; #8; #10; 1/4"; 5/16"
• Material: Steel

• Type: Locknut; Other; Free-running Locknut
• Finish: Zinc Plated

5/16-24 Finished Hex Nut Grade 5 Zinc Fi [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

HEAVY HEX NUTS. As part of our premium line of hex nut products, National Bolt & Nut offers a wide range of heavy hex nuts in various grades, finishes, threads, and sizes to meet your unique application requirements. Meeting ANSI B18.2.2 dimensional requirements, heavy hex nuts are popular for... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"; 2 1/4"; 2 1/2"; 2 3/4"; Size Range: 1/4" - 5", Fine and Course Threads
• Material: Steel

• Type: Hex Nut; Nylon Insert Nut (optional feature); Locknut (optional feature); Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Zinc Plated; Plain

Lock Nuts [See More]

• Size: 5/16"; 0.313-18 (5/16-18)
• Material: Steel

• Type: Locknut

Type S, SS, CLS, and CLSS nuts provide load-bearing threads in thin sheets with high pushout and torque-out resistance. Type SP, PEM 300 ® nuts provide strong load-bearing threads in stainless steel sheets as thin as .030 ”. Types S and SS are recommended for use in steel or aluminum... [See More]

• Size: #5; 5/16"
• Material: Stainless Steel

• Type: Self-Clinching Nut
• Standards: ASME/ANSI

5/16-18 Finished Hex Nut Zinc [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

HEAVY SQUARE NUTS. Dimensions per ANSI B18.2.2. Nylon inserts and Nuts with patches also available as an option on the Request for Information form. Other materials and finishes available. For further information, call or send an information request. In conjunction with our selection of bolts and... [See More]

• Size: 1/4"; 5/16"; 3/8"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"
• Material: Steel

• Type: Nylon Insert Nut (optional feature); Square Nut; Locknut (optional feature); Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Plain

Panel Nuts [See More]

• Size: 5/16"; 0.313-18 (5/16-18)

• Material: Steel

Type SL self-locking nuts are designed with a unique and economical TRI-DENT ® locking feature, which meets demanding locking performance requirements. 3 cycle locking performance. Achieved using steel socket head cap screws, 180 ksi / property class 12.9 with standard finish of thermal oxide... [See More]

• Size: #5; 5/16"
• Material: Hardened Steel

• Type: Locknut; Other; TRI-DENT® Locking Feature
• Finish: Zinc Plated

5/16-18 Finished Hex Nut Grade 5 Coarse [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

HEX CASTLE NUTS. Top of hex corners removed for better Cotter Pin fit. Nylon inserts and Nuts with patches also available as an option on the Request for Information form. Other materials and finishes available. For further information, call or send an information request. In conjunction with our... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"
• Material: Steel

• Type: Castle Nut; Hex Nut; Nylon Insert Nut (optional feature); Locknut; Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Zinc Plated; Zinc Chromate; Plain

Steel Standoffs [See More]

• Size: 5/16"; 0.313-18 (5/16-18)

• Material: Steel

5/16-18 Grade 8 Finished Hex Nut Zinc Ye [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

HEX FLANGE NUTS. As part of our high-quality line of flange nut fasteners, National Bolt & Nut offers a variety of hex flange nuts that meet IFI-145 dimensions. Our hex flange nuts are equipped with a wider flange that distributes pressure equally over the components being fastened, assuring a... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"
• Material: Steel

• Type: Flange Nut; Hex Nut; Nylon Insert Nut (optional feature); Locknut (optional feature); Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Plain

5/16-24 Grade 2 Finished Hex Jam Nut Zin [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

HEX JAM NUTS. As part of our premium line of hex nut products, National Bolt & Nut offers a series of hex jam nuts that meet ANSI B18.2.2 dimensional specifications. Thinner than a conventional hex nut, our hex jam nuts can be constructed using a variety of materials. A number of finish options... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"; 2 1/4"; 2 1/2"; 2 3/4"
• Material: Steel

• Type: Hex Nut; Nylon Insert Nut (optional feature); Locknut; Jam Nut; Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Zinc Plated; Zinc Chromate; Plain

5/16-24 Grade 8 Finished Hex Jam Nut Zin [See More]

• Size: 5/16"
• Material: Steel; Steel

• Type: Hex Nut

N.U. SERIES NYLON INSERT LOCK NUTS. Heavy hex style. Nylon inserts and Nuts with patches also available as an option on the Request for Information form. Other materials and finishes available. For further information, call or send an information request. In conjunction with our selection of bolts... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"; 2 1/4"; 2 1/2"; 2 3/4"
• Material: Steel

• Type: Hex Nut; Nylon Insert Nut; Locknut; Other (optional feature); Optional Nylon Inserts and Patches
• Finish: Plain

Half Hex Body Large Flange Thin Wall Series. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. CAH style rivet nuts are available in sealed head, and closed end... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Chromate; Special Finish Available On Request

5/16 " - 18 UNC Coupling Nut [See More]

• Size: 5/16"

• Type: Coupling Nut

SOLID BRASS MATERIAL. 5/16 INCH SIZE. 2-1/4 INCH. (2) BOLT, (2) NUT, (2) BRASS WASHER, (2) NICKEL PLATED WASHER INCLUSIONS/FEATURES. PACKAGING TYPE POLY BAG. WITH BREAK AWAY POINT [See More]

• Size: 5/16"
• Material: Bronze

• Type: Closet Nut

SILICON BRONZE MATERIAL. 5/16 INCH NOMINAL DIAMETER. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 25 PER CARTON. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Material: Brass

• Type: Hex Nut

The one-piece ERM is a great time saver. The ERM combines the performance of the ESL with an integrated disc spring washer. The result: Quick installations and absolute tension maintained under dynamic loads. [See More]

• Size: 5/16"
• Material: Exotic Metals (optional feature); Steel (optional feature); Hardened Steel (optional feature); Stainless Steel (optional feature); Titanium (optional feature)

• Type: Hex Nut; Washer Nut; Locknut; Other; Slotted Locknut
• Finish: Anti-Galling Coating (optional feature); Phosphate (optional feature); Galvanized (optional feature); Nickel Plated (optional feature); Zinc Plated (optional feature); Zinc Chromate (optional feature); Self-Color, Pass., Anti-Galling, Geomet

Allen nuts are designed for applications using socket products. They are internally threaded. . This Allen Nut has body diameter of .495 in, head diameter of .523 in and is .517 in long [See More]

• Size: 5/16"

• Material: Heat Treated Steel

Pressure Ratings: Performance at ambient room conditions: 120 psi for 1/16 ” fittings linear decreasing to 80 psi for 3/4 ” fittings and 60 psi for fittings larger than 3/4". Performance at elevated temperatures up to 85 ºC/185 ºF: 90 psi for 1/16 ” fittings linear... [See More]

• Size: #5; 1/4"; 5/16"; 3/8"; 1/2"; 5/8"; 1"; 1 3/8"; 1/16", 1.1", 3/16"; M4; M6; M8; M10; M12; M20; M26; 7, 15 mm

• Material: Plastic; PVDF; PTFE

Coupling nuts are sometimes known as extension nuts. These fully threaded nuts are used with threaded rod in a variety of applications; from leveling, to spacing, to joining two or more studs. [See More]

• Size: #4; #6; #8; #10; 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"; 2 1/4"; 2 1/2"; 2 3/4"; 9/16"
• Material: Bronze (optional feature); Stainless Steel (optional feature); Carbon Steel

• Type: Coupling Nut
• Finish: Zinc Clear

Standard Spiralock nuts are SAE Grade 8 equivalent, and designed to mate with standard 2A and 3A class of fit bolts. Spiralock nuts dimensionally conform to IFI standards. Our standard plating is clear zinc chromate. Other nut styles, platings and materials are available upon request. [See More]

• Size: 5/16"
• Material: Steel; Stainless Steel (optional feature); Other Materials Available Upon Request

• Type: Flange Nut; Hex Nut
• Finish: Zinc Chromate; Other Plating Available Upon Request

Our Commercial Grade Fittings are molded for ease of use in application.No special tools or ferrules are required for fitting insertion. Ark-Plas ® Commercial Grade Fittings fit the need when a low cost, high performance fitting is required that is both cost efficient and reliable. With high... [See More]

• Size: 5/16"
• Material: Plastic; Nylon

• Type: Compression Connector Nut

Fine and coarse thread axles and their corresponding nuts from 1/4" to 1" in zinc plated low carbon steel and stainless steel with or without grease fittings. [See More]

• Size: 5/16"; 3/8"; 1/2"; 3/4"; 1"
• Thread Direction: Right Hand

• Type: Hex Nut

CASE HARDENED ASTM A576, ASTM A570 MILD STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. UNC-2A THREAD SERIES. ASTM B633 APPLICABLE STANDARD. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. UNISTRUT. BRAND. WEIGHT 1.2 LB PER 100 PIECES. STANDARD AND SPECIFICATION FINISH ASTM B633... [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Hex Nut
• Finish: Galvanized

Hardened Black Oxide Finish [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Hex Nut; Locknut; Jam Nut
• Finish: Black Oxide

Featuring a smooth enclosed cover, NBS ’ acorn nuts are the perfect use for hiding unsightly threads that protrude from regular nuts. Available from #6 through ½ ” internal diameter, all acorn nuts meet IFI specifications and are only sourced from ISO-9001 accredited... [See More]

• Size: 5/16"
• Material: Steel

• Type: Acorn Nut
• Finish: Nickel Plated

STRAIGHT TYPE. STEEL MATERIAL. ZINC PLATED FINISH. 7/8 INCH. 1/2 INCH WIDTH ACROSS FLAT. 5/16 INCH NOMINAL DIAMETER. UNC-2A THREAD SERIES. 18 TPI. COLOR SILVER. APPLICATION TO JOIN TWO EXTERNALLY THREADED PARTS OF DIFFERENT THREAD DIAMETERS, OFTEN TWO PIECES OF THREADED ROD. PACKAGING QUANTITY 100 [See More]

• Size: 5/16"
• Material: Steel

• Type: Coupling Nut
• Finish: Zinc Plated

5/16-18 Acorn Nuts / Low Crown / Closed End / Steel / Nickel. Steel: The low-crown cap nut is usually manufactured in two pieces, a hex nut and an acorn-shaped top, zinc die cast to form the finished part. Stainless: Similar in design to the steel nut but made from an austenitic stainless alloy. [See More]

• Size: 5/16"
• Material: Steel

• Type: Acorn Nut
• Finish: Nickel Plated

JAM TYPE. STEEL MATERIAL. ZINC PLATED FINISH. 5/16 INCH NOMINAL DIAMETER. 18 TPI. PC 4100 MODEL [See More]

• Size: 5/16"
• Material: Steel

• Type: Hex Nut
• Finish: Zinc Plated

WITHOUT SPRING TYPE. LOW CARBON STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. 1/4 INCH THICKNESS. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. 1/4 THICKNESS - FRACTIONAL. .25 THICKNESS - DECIMAL. WEIGHT 0.07 LB. STANDARDS AND SPECIFICATIONS FINISH ASTM B633 SC1. FINISH/COATING... [See More]

• Size: 5/16"
• Material: Steel

• Type: Channel Nut
• Finish: Galvanized

5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. TYPE CLOSED END. PACKAGING QUANTITY 100. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"

• Finish: Zinc Plated

Product Information. Black Oxide Finish. Case Hardened. 1117 Material. Coupling Nuts can be used to join two or more studs for a desired length. Many sizes conform to TCMAI standards. Standard package quantity 41501-41507: 25 pcs. [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Coupling Nut
• Finish: Black Oxide

Inch-thread hexagon nuts and washers. SHNS-#4 - SHNS-#10----ANSI B18.6.3 compliance. SHNS-1/4 - SHNS-3/8----ANSI B18.2.2 compliance. SWAS-IF(INCH)----MS15795 compliance. SWAS-IS(INCH)----ASME B18.21.1 compliance. Use in combination with. SNSS(INCH) Socket Head Cap Screw （SNSS(INCH) ）. [See More]

• Size: 5/16"

• Type: Hex Nut

A nut is a type of fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten parts together. The two components work together by a combination of friction between the threads, a slight stretch of the bolt, and compression of the mating parts. Nuts are graded with... [See More]

• Size: 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1"; 1 1/8"; 1 1/4"; 1 3/8"; 1 1/2"; 1 3/4"; 2"; 2 1/4"; 2 1/2"; 2 3/4"
• Material: Steel (optional feature); Stainless Steel (optional feature); Plastic (optional feature); Nylon (optional feature); Alloy Steel

• Type: Hex Nut
• Standards: ASME/ANSI (optional feature); SAE (optional feature); ASTM

Custom sizes and other finishes available [See More]

• Size: 5/16"
• Material: Steel (optional feature); Stainless Steel (optional feature)

• Type: Acorn Nut; Hex Nut
• Finish: Zinc Plated; Black Zinc

Small Flange Knurled Body Thin Wall Series. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. CAK style nuts are available closed end designs.Other specials available... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Chromate; Special Finish Available On Request

5/16 INCH NOMINAL DIAMETER. 18 TPI. 17/64 INCH THICKNESS. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. 17/64 THICKNESS - FRACTIONAL. .2656 THICKNESS - DECIMAL. PACKAGING QUANTITY 100 PIECES PER PLASTIC BOX. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN. [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Hex Nut

The ESL's two self-locking slots make it ideal in any application subjected to high vibration, shock, impact, heavy loads, and high temperatures. The ESL provides unparalleled locking ability without seizing up upon removal. [See More]

• Size: 5/16"
• Material: Bronze (optional feature); Brass (optional feature); Exotic Metals (optional feature); Steel (optional feature); Hardened Steel (optional feature); Stainless Steel (optional feature); Titanium (optional feature); Light Alloy

• Type: Hex Nut; Locknut; Other; Slotted Locknut
• Finish: Anti-Galling Coating (optional feature); Phosphate (optional feature); Galvanized (optional feature); Nickel Plated (optional feature); Zinc Plated (optional feature); Zinc Chromate (optional feature); Self-Color, Pass., Anti-Galling, Geomet

These button hole nuts allow for quick removal and threading on long thread lengths. Great for quick change overs. Made from carbon steel. Black oxide finish. . This Black Oxide finish Button Thread Nut has height of .625 in and distance across flats of .625 in [See More]

• Size: 5/16"
• Finish: Black Oxide; Black Oxide

• Material: Steel; Carbon Steel

Hex nuts are six-sided, hexagon shaped metal fasteners that have a threaded hole in the center used to secure a bolt or machine screw. Available in a variety of grades and finishes, they are frequently used in construction and automotive applications. [See More]

• Size: #6; #8; #10; 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; 5/8"; 3/4"; 7/8"; 1 1/8"; M4; M5; M6; M8; M10; M12
• Material: Stainless Steel (optional feature); Carbon Steel

• Type: Hex Nut
• Finish: Zinc Clear

These load-bearing threaded fasteners for thin sheets (Aluminum, Steel and other ductile materials) have a clinching ring that locks the displaced metal behind the tapered shank ensuring high pushout resistance. High torque out resistance is ensured when the knurled platform is embedded in the sheet... [See More]

• Size: 5/16"
• Material: Steel (optional feature); Stainless Steel (optional feature)

• Type: Round Nut; Self-Clinching Nut
• Thread Direction: Right Hand

JAM TYPE. 5/16 INCH NOMINAL DIAMETER. UNC-2 THREAD SERIES. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. POWER-STRUT[R] BRAND. FINISH/COATING ELECTROGALVANIZED. NOMINAL DIAMETER - DECIMAL - UOM IN. PS83 MODEL [See More]

• Size: 5/16"
• Finish: Galvanized

• Type: Hex Nut

Black Oxide Finish [See More]

• Size: 5/16"
• Material: Steel

• Type: Locknut; Jam Nut
• Finish: Black Oxide

Featuring forged wings, NBS ’ cold forged wing nuts meet IFI specifications and are sourced only from ISO-9001 accredited manufacturers. Available from #6 through ½ ” diameter, all cold forged wing nuts come with zinc finish. [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Wing Nut

JAM TYPE. STEEL MATERIAL. ZINC PLATED FINISH. 9/16 INCH WIDTH ACROSS FLAT. 5/16 INCH NOMINAL DIAMETER. 18 TPI. THREAD TYPE COARSE. GRADE A. HEIGHT 0.217 INCH. THREAD DIRECTION RIGHT HAND. COLOR SILVER. PACKAGING QUANTITY 100 PER BOX [See More]

• Size: 5/16"
• Material: Steel

• Type: Hex Nut
• Finish: Zinc Plated

5/16-18 X 9/16 Acorn Nuts / Open End / Steel / Nickel. A low-crown cap nut with the top portion of its dome removed, allowing the male-threaded part to protrude through the opening. The open-ended cap nut still offers much of the attractiveness and protection of a regular closed-end cap nut but can... [See More]

• Size: 5/16"
• Material: Steel

• Type: Acorn Nut
• Finish: Nickel Plated

BRASS MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. L H DOTTIE. BRAND. PACKAGING QUANTITY 50 PIECES. NOMINAL DIAMETER - DECIMAL - UOM IN. HNBR MODEL [See More]

• Size: 5/16"
• Material: Bronze

• Type: Hex Nut

WITH SPRING TYPE. LOW CARBON STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. 1/4 INCH THICKNESS. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. 1/4 THICKNESS - FRACTIONAL. .25 THICKNESS - DECIMAL. WEIGHT 0.07 LB. STANDARDS AND SPECIFICATIONS FINISH ASTM B633 SC1. FINISH/COATING... [See More]

• Size: 5/16"
• Material: Steel

• Type: Channel Nut
• Finish: Galvanized

STRAIGHT TYPE. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Coupling Nut

Product Information. Black Oxide Finish. Case Hardened. High Grade Alloy Steel. Will outlast ordinary Hex Jam Nuts when used in repetitive operations. Standard package quantity: 25 pcs. [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Hex Nut; Locknut; Jam Nut
• Finish: Black Oxide

Inch-thread hexagon nuts and washers. SHNS-#4 - SHNS-#10----ANSI B18.6.3 compliance. SHNS-1/4 - SHNS-3/8----ANSI B18.2.2 compliance. SWAS-IF(INCH)----MS15795 compliance. SWAS-IS(INCH)----ASME B18.21.1 compliance. Use in combination with. SNSS(INCH) Socket Head Cap Screw （SNSS(INCH) ）. [See More]

• Size: 5/16"

• Type: Hex Nut

Large Flange Knurled Body Thin Wall Series. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. CAL style rivet nuts are available in sealed, closed end, and wedge head... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Chromate; Special Finish Available On Request

9/16 INCH WIDTH ACROSS FLAT. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 19/64 INCH THICKNESS. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. 19/64 THICKNESS - FRACTIONAL. .2968 THICKNESS - DECIMAL. PACKAGING QUANTITY 100 PIECES PER PLASTIC BOX. FINISH/COATING ZINC PLATED. NOMINAL... [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Hex Nut

These button hole nuts allow for quick removal and threading on long thread lengths. Great for quick change overs. Made from carbon steel. Black oxide finish. . This Black Oxide finish Button Thread Nut has height of .813 in and distance across flats of 1.000 in [See More]

• Size: 5/16"
• Finish: Black Oxide; Black Oxide

• Material: Steel; Carbon Steel

A locknut, also known as a lock nut, locking nut, prevailing torque nut, stiff nut or elastic stop nut, is a nut that resists loosening under vibrations and torque. Elastic stop nuts and prevailing torque nuts are of the particular type where some portion of the nut deforms elastically to provide a... [See More]

• Size: #10; 1/4"; 5/16"; 3/8"; 7/16"; 1/2"; M4; M5; M6; M8; M10; M12
• Material: Carbon Steel

• Type: Hex Nut; Locknut; Other; Elastic Stop Nut
• Thread Direction: Right Hand

Hardened. Black Oxide finish. T nuts with suffix "N" conform to National Jig and Fixture Institute standards [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Tee Nut
• Finish: Black Oxide

With serrations under flange, NBS ’ serrated flange nuts offer the perfect solution against nuts becoming loose from vibrations. Available from #8 through ¾ ” (inch) and M6 through M12 internal diameter (metric), all serrated flange nuts meet IFI specifications and are only... [See More]

• Size: 5/16"
• Material: Steel

• Type: Flange Nut
• Finish: Trivalent

5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PER BOX. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"

• Type: Hex Nut

5/16-18 Flex-Locknuts / Full Height / Hex / Cad and Wax. An all-metal, one-piece, hex-shaped lock nut with a round collar at its back end. The collar is segmented with opposed slots cut into it above each corner of the nut. When the screw or bolt reaches the collar, the slotted portion expands which... [See More]

• Size: 5/16"
• Material: Steel

• Type: Locknut; Flex-Top Locknuts
• Finish: Cadmium

JAM TYPE. SILICON BRONZE MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. HN MODEL [See More]

• Size: 5/16"
• Material: Brass

• Type: Hex Nut

WITH LONG SPRING TYPE. LOW CARBON STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. 1/4 INCH THICKNESS. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. 1/4 THICKNESS - FRACTIONAL. .25 THICKNESS - DECIMAL. WEIGHT 0.07 LB. STANDARDS AND SPECIFICATIONS FINISH ASTM B633 SC1. [See More]

• Size: 5/16"
• Material: Steel

• Type: Channel Nut
• Finish: Galvanized

5/16 INCH NOMINAL DIAMETER. SAE APPLICABLE STANDARD. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Flange Nut

Product Information. Black Oxide Finish. High Grade Alloy Steel. Will outlast ordinary Hex Nuts when used in repetitive operations. Standard package quantity: 25 pcs. [See More]

• Size: 5/16"
• Material: Steel

• Type: Hex Nut
• Finish: Black Oxide

Inch-thread hexagon nuts and washers. SHNS-#4 - SHNS-#10----ANSI B18.6.3 compliance. SHNS-1/4 - SHNS-3/8----ANSI B18.2.2 compliance. SWAS-IF(INCH)----MS15795 compliance. SWAS-IS(INCH)----ASME B18.21.1 compliance. Use in combination with. SNSS(INCH) Socket Head Cap Screw （SNSS(INCH) ）. [See More]

• Size: 5/16"

• Type: Hex Nut

Small Flange, Smooth Body, Thin Wall Series. Low profile. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. Finish: Zinc Plated per ASTM B633 Fe/Zn8, Type III. Special... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Plated; Special Finish Available On Request

These check nuts are made of 303 stainless steel or low carbon steel, soft, with a black oxide finish. They can be used in conjunction with many other components such as knurled head screws, torque thumb screws, hand knob assemblies, toggle show clamp assemblies and many other tooling applications. [See More]

• Size: 5/16"
• Finish: Black Oxide; Black Oxide

• Material: Steel; Soft Low-Carbon Steel

With serrations under flange, NBS ’ serrated flange nuts offer the perfect solution against nuts becoming loose from vibrations. Available from #8 through ¾ ” (inch) and M6 through M12 internal diameter (metric), all serrated flange nuts meet IFI specifications and are only... [See More]

• Size: 5/16"
• Material: Steel

• Type: Flange Nut
• Finish: Trivalent

NYLON-FILLED COLLAR TYPE. STEEL MATERIAL. ZINC PLATED FINISH. 0.502 INCH WIDTH ACROSS FLAT. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 0.359 INCH THICKNESS. THREAD DIRECTION RIGHT HANDED. PACKAGING QUANTITY 100 PER BOX [See More]

• Size: 5/16"
• Material: Steel

• Type: Hex Nut
• Finish: Zinc Plated

5/16-18 Hex Keps Nuts / Steel / Zinc. A hex nut pre-assembled with a free spinning external tooth lock washer. The locking action is achieved when the nut is tightened against a bearing surface as the teeth of the lock washer dig into it. This is the most popular type of locknut because of its... [See More]

• Size: 5/16"
• Material: Steel

• Type: Hex Nut; Keps Nut
• Finish: Zinc Plated

JAM TYPE. STAINLESS STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. HN MODEL [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Hex Nut

SILICON BRONZE MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"

• Type: Hex Nut

Product Information. Assemblies consist of Flange Nuts (Part No.'s 41801-41811) and Spherical Washers (Part No.'s 42741-42750). For material information, see individual components [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Flange Nut
• Finish: Black Oxide

Cadmium Free Small Flange 360 ° Swaging Series. Actual hole size can be affected by parent material and material thickness. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. CFT Series available in different finishes. Use... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Tin (optional feature)

These check nuts are made of 303 stainless steel or low carbon steel, soft, with a black oxide finish. They can be used in conjunction with many other components such as knurled head screws, torque thumb screws, hand knob assemblies, toggle show clamp assemblies and many other tooling applications. [See More]

• Size: 5/16"

• Material: Stainless Steel; 303 Stainless Steel

Adaptable and dependable, NBS ’ finished hex nuts can be used in thousands of different applications. Available from ¼ ” through 1 ” (inch) and M3 through M24 (metric) internal diameter, all finished hex nuts meet IFI specifications and are only sourced from ISO-9001... [See More]

• Size: 5/16"
• Material: Steel

• Type: Hex Nut
• Finish: Trivalent

JAM TYPE. SILICON BRONZE MATERIAL. 9/16 INCH WIDTH ACROSS FLAT. 5/16 INCH NOMINAL DIAMETER. 18 TPI. THREAD TYPE COARSE. HEIGHT 0.217 INCH. THREAD DIRECTION RIGHT HAND. PACKAGING QUANTITY 100 PER BOX [See More]

• Size: 5/16"
• Material: Brass

• Type: Hex Nut

STAINLESS STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Hex Nut

Product Information. Black Oxide Finish. Case Hardened. 12L14 Material. Many sizes conform to TCMAI standards. When used with Spherical Washers, Flange Nuts will equalize thread loads. Standard package quantity: 41801-41807: 25 pcs. [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Flange Nut
• Finish: Black Oxide

Prebulbed Slotted Body Series. Installs into single, variable or multiple thickness materials. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. Can be installed with... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Chromate; Special Finish Available On Request

Reid has a large selection of industrial nuts for all of your fastening needs. Reid offers everything from tooling, allen, button thread, Jam, standard hex, thumb and flange nuts to industrial T-slot and machine screw nuts. Reid offers both imperial and metric nuts in a wide variety of materials... [See More]

• Size: 5/16"
• Material: Stainless Steel; 303 Stainless Steel

• Type: Locknut; Jam Nut

Individually top pressed to produce a razor tight sealing lock, NBS ’ top lock flange nuts set the standard for all locking flange nuts. Available from ¼ ” through ¾ ” (inch) and M6 through M16 (metric) internal diameter, all top lock flange nuts are non-serrated... [See More]

• Size: 5/16"
• Material: Steel

• Type: Flange Nut; Locknut
• Finish: Phosphate

BRASS MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PER BOX. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Material: Bronze

• Type: Hex Nut

5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Hex Nut

Product Information. 303 Stainless Steel. Special sizes quoted upon request [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Flange Nut

Straight Shank Slotted Body Series. Installs into single, variable or multiple thickness materials. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. Can be installed... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Chromate; Special Finish Available On Request

Reid has a large selection of industrial nuts for all of your fastening needs. Reid offers everything from tooling, allen, button thread, Jam, standard hex, thumb and flange nuts to industrial T-slot and machine screw nuts. Reid offers both imperial and metric nuts in a wide variety of materials... [See More]

• Size: 5/16"
• Material: Case Hardened Steel

• Type: Locknut; Jam Nut

Featuring a built in external tooth lock washer for exceptional surface grip, NBS ’ k-lock nuts are available from ¼ ” through ¾ ” internal diameter. All k-lock nuts are sourced from ISO-9001 accredited manufacturers and come with zinc finish. [See More]

• Size: 5/16"
• Material: Steel

• Type: Locknut; Jet Nut (K-Nut)
• Finish: Zinc Plated

JAM TYPE. 18-8 STAINLESS STEEL MATERIAL. 0.5 INCH WIDTH ACROSS FLAT. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 0.283 INCH THICKNESS. THREAD TYPE COARSE. THREAD DIRECTION RIGHT HANDED. PACKAGING QUANTITY 100 PER BOX [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Hex Nut

JAM TYPE. 5/16 INCH NOMINAL DIAMETER. SAE APPLICABLE STANDARD. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Hex Nut

Product Information. Nut: 303 Stainless Steel. Washer: 303 Stainless Steel [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Flange Nut

Heavy Duty Rivet Nut Flat Head Series, Large Flange, Smooth Shank. Grip range can be affected by parent material and hole size. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. CA style rivet nuts are available in closed end,... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Zinc Plated; Special Finish Available On Request

Reid has a large selection of industrial nuts for all of your fastening needs. Reid offers everything from tooling, allen, button thread, Jam, standard hex, thumb and flange nuts to industrial T-slot and machine screw nuts. Reid offers both imperial and metric nuts in a wide variety of materials... [See More]

• Size: 5/16"
• Material: Case Hardened Steel

• Type: Locknut; Jam Nut

Featuring a white nylon insert and available in both normal and thin pattern, NBS ’ nylon insert lock nuts are the ideal general purpose locking nut. Available from ¼ ” through 1 ” (inch) and M3 through M16 (metric) internal diameter, all nylon insert lock nuts meet IFI... [See More]

• Size: 5/16"
• Material: Steel

• Type: Locknut
• Finish: Zinc Plated

STAINLESS STEEL MATERIAL. 5/16 INCH NOMINAL DIAMETER. 18 TPI. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PER BOX. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Hex Nut

JAM TYPE. 5/16 INCH NOMINAL DIAMETER. USS APPLICABLE STANDARD. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Hex Nut

Product Information. 304 Stainless Steel. The last thread is incomplete on Stainless Steel T-Slot Nuts to prevent the stud from turning through the bottom of the nut. *Stainless Steel T-Slot Nuts are undersized to fit machine table slot. [See More]

• Size: 5/16"
• Material: Stainless Steel

• Type: Tee Nut

Cadmium Free Knurled Body 360 ° Swaging Series. Actual hole size can be affected by parent material and material thickness. Sherex recommends trial installations to determine the proper grip range for the application. Contact Sherex for details. CFW Series available in different finishes. Use... [See More]

• Size: 5/16"
• Material: Steel

• Type: Anchor Nut
• Finish: Tin (optional feature)

Reid has a large selection of industrial nuts for all of your fastening needs. Reid offers everything from tooling, allen, button thread, Jam, standard hex, thumb and flange nuts to industrial T-slot and machine screw nuts. Reid offers both imperial and metric nuts in a wide variety of materials... [See More]

• Size: 5/16"
• Material: Case Hardened Steel

• Type: Locknut; Jam Nut

Featuring either 3 or 4 prongs, NBS ’ tee nuts all meet IFI specifications and are sourced only from ISO-9001 accredited manufacturers. Available from #6 through 3/8 ” diameter for both 3 and 4 prongs, all tee nuts come with zinc finish. [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Tee Nut

5/16 INCH NOMINAL DIAMETER. 24 TPI. SAE APPLICABLE STANDARD. 5/16 NOMINAL DIAMETER - FRACTIONAL. .3125 NOMINAL DIAMETER - DECIMAL. PACKAGING QUANTITY 100 PIECES. FINISH/COATING ZINC PLATED. NOMINAL DIAMETER - DECIMAL - UOM IN [See More]

• Size: 5/16"
• Finish: Zinc Plated

• Type: Hex Nut

Product Information. Black Oxide Finish. Case Hardened. 12L14 Material. Head rotates but washer remains stationary upon contact and holds without marring the workpiece [See More]

• Size: 5/16"
• Material: Hardened Steel

• Type: Flange Nut; Washer Nut
• Finish: Black Oxide