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Type:

Unified Thread:

Metric Thread:

Miniature Thread:

Handedness:

Thread Size (Decimal Diameter):

Fastener Strength:

Hole Size (Diameter):

Length:

Panel Thickness:

Shoulder Diameter:

Metallic:

Non-Metallic:

Finish:

Head Type:

Drive Type:

Tamperproof  / Tamper-resistant Drives:

Features:

Fastener Standards:

Help with Captive Fasteners specifications:

Type
   Type       
   Your choices are...         
   Captive Nuts       Captive nuts are internally-threaded, captive fasteners designed for quick-connecting with studs. They are good for blind locations and can usually be attached without damaging panel finishes. They are often used in electronic and industrial enclosure applications.   
   Pallet Nuts       Pallet nuts are also known as "tee nuts" or "knock-in nuts." Pallet nuts are usually made from metal or plastic and have a large flange with teeth that get hammered into place by the user. The teeth dig into pallet material, holding the joint fast.   
   Weld Nuts       Weld nuts are captive fasteners designed for welding to flat surfaces for permanent retention within an assembly. Weld nuts have threaded holes through the base and come in several types. 
   Captive Pins       Captive pins are often used in electronic circuit board applications, where they are pushed like a rivet into their target panel hole. They feature strong, self-clinching heads that deform softer mating materials. These heads resist torque and assembly push-out forces, and may also rest flushly against a panel or board. 
   Captive Screws       Captive screws are fasteners designed for ease of installation, often knurled for finger use and retained within their functional environment when not engaged. Captive screw (or bolt) retention prevents loss or damage within the captive screw's parent assembly, or damage to components in the nearby working environment. 
   Captive Standoffs       Captive standards are internally-threaded fasteners designed to secure, support, or provide spacing for circuit boards and similar assemblies upon use of a mating screw. 
   Captive Studs       Captive studs are externally-threaded fasteners designed for permanent assembly integration. They are sometimes used to provide retention for outer-surface metal housing attachments to body structures. 
   Other       Other, unlisted or proprietary captive fastener classes / types. 
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Thread Specifications
   Unified Thread       
   Your choices are...         
   # 0000       # 0000 fasteners have an inner diameter of 0.021 in. 
   # 000       # 000 fasteners have an inner diameter of 0.034 in. 
   # 00       # 00 fasteners have an inner diameter of 0.047 in. 
   # 0       # 0 fasteners have an inner diameter of 0.060 in. 
   # 1       # 1 fasteners have an inner diameter of 0.073 in. 
   # 2       # 2 fasteners have an inner diameter of 0.086 in. 
   # 3       # 3 fasteners have an inner diameter of 0.099 in. 
   # 4       # 4 fasteners have an inner diameter of 0.112 in. 
   # 5       # 5 fasteners have an inner diameter of 0.125 in. 
   # 6       # 6 fasteners have an inner diameter of 0.138 in. 
   # 7       # 7 fasteners have an inner diameter of 0.151 in. 
   #  8       # 8 fasteners have an inner diameter of 0.164 in. 
   # 9       # 9 fasteners have an inner diameter of 0.177 in. 
   # 10       # 10 fasteners have an inner diameter of 0.190 in. 
   # 12       # 12 fasteners have an inner diameter of 0.216 in. 
   # 14       # 14 fasteners have an inner diameter of 0.242 in. 
   1/4"       1/4" fasteners have an inner diameter of .250 in. 
   # 16       # 16 fasteners have an inner diameter of 0.268 in. 
   # 18       # 18 fasteners have an inner diameter of 0.294 in. 
   5/16"       5/16" fasteners have an inner diameter of .3125 in. 
   # 20       # 20 fasteners have an inner diameter of 0.320 in. 
   # 24       # 24 fasteners have an inner diameter of 0.372 in. 
   3/8"       3/8" fasteners have an inner diameter of .375 in. 
   7/16"       7/16" fasteners have an inner diameter of .4375 in. 
   1/2"       1/2" fasteners have an inner diameter of .500 in. 
   5/8"       5/8" fasteners have an inner diameter of .625 in. 
   3/4"       3/4" fasteners have an inner diameter of .750 in. 
   7/8"       7/8" fasteners have an inner diameter of .875 in. 
   1"       1" fasteners have an inner diameter of 1.000 in. 
   1 1/8"       1 1/8" fasteners have an inner diameter of 1.125 in. 
   1 1/4"       1 1/4" fasteners have an inner diameter of 1.250 in. 
   1 3/8"       1 3/8" fasteners have an inner diameter of 1.375 in. 
   1 1/2"       1 1/2" fasteners have an inner diameter of 1.500 in. 
   1 3/4"       1 3/4" fasteners have an inner diameter of 1.750 in. 
   2"       2" fasteners have an inner diameter of 2.000 in. 
   2 1/4"       2 1/4" fasteners have an inner diameter of 2.250 in. 
   2 1/2"       2 1/2" fasteners have an inner diameter of 2.500 in. 
   2 3/4"       2 3/4" fasteners have an inner diameter of 2.750 in. 
   3"       3" fasteners have an inner diameter of 3.000 in. 
   Other       Other, unlisted inch-based sizes. 
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   Metric Thread       
   Your choices are...         
   M1.6       M1.6 fasteners have an inner diameter of 1.6 mm. 
   M2       M2 fasteners have an inner diameter of 2.0 mm. 
   M2.5       M2.5 fasteners have an inner diameter of 2.5 mm. 
   M3       M3 fasteners have an inner diameter of 3.0 mm. 
   M3.5       M3.5 fasteners have an inner diameter of 3.5 mm. 
   M4       M4 fasteners have an inner diameter of 4.0 mm. 
   M5       M5 fasteners have an inner diameter of 5.0 mm. 
   M6       M6 fasteners have an inner diameter of 6.0 mm. 
   M8       M8 fasteners have an inner diameter of 8.0 mm. 
   M10       M10 fasteners have an inner diameter of 10.0 mm. 
   M12       M12 fasteners have an inner diameter of 12.0 mm. 
   M14       M14 fasteners have an inner diameter of 14 mm. 
   M16       M16 fasteners have an inner diameter of 16 mm. 
   M18       M18 fasteners have an inner diameter of 18 mm. 
   M20       M20 fasteners have an inner diameter of 20 mm. 
   M22       M22 fasteners have an inner diameter of 22 mm. 
   M24       M24 fasteners have an inner diameter of 24 mm. 
   M25       M25 fasteners have an inner diameter of 25 mm. 
   M26       M26 fasteners have an inner diameter of 26 mm. 
   M27       M27 fasteners have an inner diameter of 27 mm. 
   M28       M28 fasteners have an inner diameter of 28 mm. 
   M30       M30 fasteners have an inner diameter of 30 mm. 
   M32       M32 fasteners have an inner diameter of 32 mm. 
   M33       M33 fasteners have an inner diameter of 33 mm. 
   M35       M35 fasteners have an inner diameter of 35 mm. 
   M36       M36 fasteners have an inner diameter of 36 mm. 
   M38       M38 fasteners have an inner diameter of 38 mm. 
   M40       M40 fasteners have an inner diameter of 40 mm. 
   M42       M42 fasteners have an inner diameter of 42 mm. 
   M48       M48 fasteners have an inner diameter of 48 mm. 
   M56       M56 fasteners have an inner diameter of 56 mm. 
   M64       M64 fasteners have an inner diameter of 64 mm. 
   Other       Other, unlisted metric sizes. 
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Miniature Thread       
   Your choices are...         
   0.30 UNM       Fasteners are 0.30 mm in diameter. 
   0.40 UNM       Fasteners are 0.40 mm in diameter. 
   0.50 UNM       Fasteners are 0.50 mm in diameter. 
   0.60 UNM       Fasteners are 0.60 mm in diameter. 
   0.80 UNM       Fasteners are 0.80 mm in diameter. 
   1.00 UNM       Fasteners are 1.00 mm in diameter. 
   1.20 UNM       Fasteners are 1.20 mm in diameter. 
   Other       Other, unlisted miniature screw sizes. 
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   Handedness       
   Your choices are...         
   Right Hand Thread       Nuts are tightened in a clockwise direction. 
   Left Hand Thread       Nuts are tightened in a counterclockwise direction. 
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   Thread Size (Decimal Diameter)       Inner or outer thread diameter on captive fastener. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Performance
   Fastener Strength       Ultimate rated material strength in tension. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Hole Size (Diameter)       Diameter of the prepared hole for use with the captive fastener. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Length       Total captive fastener length. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Panel Thickness       Combined thickness of the inner panel and outer panel (trapped layer), a distance through which the captive fastener's screw threads or pin must travel. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Shoulder Diameter       The diameter of the shoulder of the screw.  The shoulder is the unthreaded shank, located under the head of the screw that is long in comparison to its threaded portion. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Material / Finish
   Metallic       
   Your choices are...         
   Aluminum       Aluminum is a bluish, silver-white, malleable, ductile, light, trivalent, metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation.  Aluminum is lighter than steel, but not as strong. 
   Brass       Brass provides good strength, excellent high-temperature ductility, reasonable cold ductility, good conductivity, excellent corrosion resistance, good bearing properties, and low magnetic permeability. 
   Bronze / Copper Base Alloy       Bronze is a copper base alloy composed of copper as the main alloying metal and one or more other metals, such as tin, zinc, or phosphorus. Silicon bronze is one typical fastener alloy. 
   Copper       Copper is a common, reddish, metallic element that is both ductile and malleable. Copper is one of the best conductors of heat and electricity. It also exhibits good corrosion resistance. 
   Exotic Metals       Exotic metals and alloys have specialized properties. This category includes materials such as Hastelloy®, Monel®, beryllium copper, beryllium nickel, niobium, tantalum, titanium, and zirconium. 
   Molybdenum       Molybdenum is a chemical element with the symbol Mo and an atomic number of 42.  Molybdenum has the sixth highest melting point of any element and is commonly used in high-strength steel alloys. 
   Steel       Steel is a commercial iron that contains carbon in any amount up to about 1.7 percent as an essential alloying constituent. Many grades of carbon and alloy steels are used as fastener materials. Steel may require coating for protection against corrosion. 
   Hardened Steel       Steel can be hardened in a number of ways. Methods include quenching techniques in oil and water, and passing the steel through induction chambers. During processing, the rapid cooling of steel freezes, traps, and packs the carbon atoms inside the shrunken iron crystals. The resulting steel is very hard and brittle. Hardened steel is strong, but cannot absorb much shock or impact without breaking. 
   Stainless Steel       Stainless steel is chemical and corrosion-resistant and can have relatively high stress ratings. Many grades are used in fasteners. Often, stainless steel does not require an anti-corrosion coating; however, most stainless steels cannot be hardened to the same degree as carbon steels. 
   Superalloy       Superalloys are high-performance alloys that exhibit the following features: mechanical strength, good surface stability, resistance to corrosion and oxidation, and resistance to creep at high temperatures. Common superalloys include Hastelloy®, Inconel®, Incoloy®, and Monel®. The attributes of Hastelloy® alloys include high resistance to uniform attack and localized corrosion resistance. It also provides stress corrosion cracking resistance, and ease of welding and fabrication. Hastelloy is a registered trademark of Haynes International, Inc. Inconel® and Incoloy® (Special Metals Corporation) provide good strength and excellent resistance to oxidation and carbonization in high temperatures environments, and in many aqueous environments. These proprietary materials are used in process piping, heat exchangers, heating element sheathing and nuclear steam generator tubing. Typically, Inconel and Incoloy are used at service temperatures below 650° C (1200° F). Monel® (Special Metals Corporation) is a proprietary, high-strength alloy that offers resistance to a range of corrosive media, including seawater, hydrofluoric and sulfuric acids, and alkalis.  
   Titanium       Titanium is a hard, lustrous, silvery element that is relatively abundant in the Earth's crust. It is valued for its lightness, strength, and corrosion resistance. Titanium is used widely in the aerospace industry and in medical products such as replacement joints. When alloyed with other metals, especially steel, titanium adds strength and oxidation resistance. 
   Other       Other unlisted, specialized, or proprietary metallic materials. 
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   Non-Metallic       
   Your choices are...         
   Plastic       Products are made of thermoplastic materials. 
   FRP       Fiber-reinforced plastic (FRP) or fiber-reinforced polyurethane is a composite material with reinforcing fibers. It is stronger than many plastics that do not contain reinforcing additions. When made with polyurethane, FRP is a tough and wear-resistant material. 
   Nylon       Nylon is a tough, resistant, general-purpose material. It comprises several grades of polyamides and has good pressure ratings. Nylon 6/6 is commonly used with fasteners. 
   PVC       Polyvinyl chloride (PVC) is a widely used material that has good flexibility, a smooth surface, and nontoxic qualities. Some grades are used in food and chemical processes because of PVC’s inert nature and good resistance to chemicals such as acids and alcohols. PVC brand names include ACP® and Dural® (Alpha Gary), Geon® (Geon), Benvic® (Solvay), and Flexalloy® (Teknor Apex). 
   PVDF       Polyvinylidene fluoride (PVDF) is a melt-processable fluoropolymer. PVDF has similar properties to other fluoropolymers, but provides better strength and lower creep. PVDF also offers good wear resistance and excellent chemical resistance; however, it does not perform well at elevated temperatures. Brand names include Kynar® (Elf AtoChem). 
   PTFE       Polytetrafluoroethylene (PTFE) is an insoluble compound that exhibits a high degree of chemical resistance and a low coefficient of friction. It is sometimes marketed in proprietary classes of materials such as Teflon®, a registered trademark of DuPont Dow Elastomers. 
   Other       Other unlisted, specialized, or proprietary non-metallic materials. 
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   Finish       
   Your choices are...         
   Anodize       Anodizing is a process for finishing aluminum alloys that uses the electrolytic oxidation of the aluminum surface to produce a protective oxide coating. The anodic coating consists of hydrated aluminum oxide and is resistant to corrosion and abrasion. Conventional coatings are 0.1 to 1.0 mils thick and are mostly transparent, but may be colored. Anodizing preserves the natural luster and texture of the metal. Anodized coatings are hard, durable, will never peel, and, under normal conditions, will never wear through. Standard and decorative colors are available. This category includes hard-coat anodizing. 
   Black Oxide       Black oxide is a conversion coating that causes virtually no dimensional change. It is a uniform, continuous conversion of the existing metal to a black form of rust. Black oxide is used on components where tight tolerances are needed. It is used mostly as a decorative coating. 
   Chrome       Chrome finish is an electroplated coating that is applied for purposes of lubricity, wear resistance, and decoration. Chrome provides a bright and highly reflective finish. 
   Galvanized       Galvanizing immerses clean, oxide-free iron or steel into molten zinc in order to apply a zinc coating that is metallurgically bonded to the iron or steel surface. The zinc coating protects the surface against corrosion in two ways. First, it shields the base metal from the atmosphere. Second, because zinc is more electronegative than iron or steel, the coating reacts with corroding agents, providing a longer service life for the part. 
   Gold       Gold plating provides total resistance to oxidation and corrosion. It is electrically conductive and can be alloyed with cobalt to produce a wear-resistant finish. 
   Nickel Plated       Nickel plating is a common form of electrolytic deposition. 
   Phosphate       Phosphate coatings are applied via the chemical or electrochemical treatment of a metal’s surface. These corrosion-resistant coatings provide a surface for the improved adhesion of primers and paints. 
   Silver       Silver is the most electrically conductive plating finish. It is used in electronic fasteners for electrical conductivity and signal transmittance. Silver oxidizes rapidly, but resists corrosion. 
   Tin       Tin plating is applied to electronic fasteners that are made of brass. 
   Zinc Plated       Zinc plating is a common form of plating that provides corrosion resistance. 
   Zinc Chromate (Yellow)       Fasteners have a yellow zinc chromate finish. 
   Other       Other unlisted finish. 
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Head Type
   Head Type       
   Your choices are...         
   Binding Head         A binding head fastener has a rounded top surface with slightly tapered sides and a flat bearing. 
   Button Head       A button head fastener has a rounded top surface with cylindrical sides and a flat bearing surface. 
   Cheese Head       A slotted fastener with a head shaped like a fresh cheese disc found in a grocery or street-market. The cheese head’s outer head diameter remains constant from its drive surface to where it meets the shank (bearing surface). 
   Fillister Head       A fillister head fastener has a rounded top surface with cylindrical sides and a flat bearing surface. 
   Five-sided       A five-sided fastener has 5 sides in the shape of a pentagon.  Five-sided fasteners are tightened and loosened by special wrenches and are used for special applications, such as the valves of fire hydrants. 
   Flat Head       A flat head has a flat top surface and a conical bearing surface whose diameter narrows in the direction of the shank. 
   Hexagon Head       A hexagon head fastener has six equal sides, a flat top and a flat bearing surface.  They are designed to be tightened and loosened by a wrench. 
   Oval Head       An oval head fastener has a rounded top surface with a conical bearing surface, usually with an included angle of 82 degrees. 
   Pan Head       A pan head fastener has a flat top, cylindrical sides and a flat bearing surface.  A recessed pan head fastener has a rounded top, cylindrical sides and a flat bearing surface. 
   Round Head       A round head fastener has a rounded, elliptical top surface and a flat bearing surface. 
   Socket Head Cap       A socket head cap screw has a cylindrical head, a hexagon socket drive and a flat bearing surface. 
   Square Head       A square head fastener has four equal sides, a flat top and a flat bearing surface.  They are designed to be tightened and loosened by a wrench. 
   Truss Head       A truss head fastener has a low head height, a rounded top surface, and a flat bearing surface. 
   Washer Head       A washer head screw has a washer-like bearing surface that distributes the load over a larger area. 
   Other       Other, unlisted head type. 
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Drive Type
   Drive Type       
   Your choices are...         
   12-Point       Drives have 12 points of contact and are tightened and loosed with a special wrench. 
   Bristol Spline       Bristol spline drives are recessed drives with four to six splines that prevent wrenches from camming out. Most products have six splines; however, two smaller-sized models have only four spines. 
   Clutch       Clutch drives are recessed and shaped like a bowtie. 
   Hex Socket / Allen       Hex socket drives or Allen drives are six-sided. They are turned with a hexagonal wrench or an Allen wrench.  
   Phillips / Frearson       Phillips is a recessed, cross-drive system that was designed originally for aluminum screws. During tightening, the mating Phillips screwdriver will slip before the drive strips.   Frearson drives are a cross-drive system more commonly known as ANSI Type II. Frearson drives have a sharper point (73° included angle) than Phillips drives (123° included angle). 
   Posidriv®       Posidriv® (Phillips Screw Company) is a recessed drive called ANSI Type 1A. It is similar to a standard Phillips drive, but has an additional cross-recess at 90°. Posidriv fasteners are well-suited for applications that require high tightening torque because the driver will not slip upon tightening. 
   Slotted       A slotted drive has a standard, slotted recess. This is one of the oldest drive types.  
   Square / Robertson       Square drives or Robertson drives are four-sided, recessed drives. Square drives do not cam out when tightened and allow for four different driver positions. 
   Supadriv®       Supadriv® (Trifast Plc.) is a recessed drive that resembles a Phillips cross-drive, but has a smaller square drive in the center.  A Supadriv driver will turn a Posidriv fastener. 
   Torx®       Torx® is a six-pointed, lobed or star-pattern recess with straight walls. Torx is a registered trademark of the Camcar Corporation, a division of Textron Industries. 
   Other       Other, unlisted, or proprietary drive types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Tamperproof  / Tamper-resistant Drives       
   Your choices are...         
   One-way Slotted       One-way screw drives are designed to be tightened with a slotted screwdriver. Because they are undercut, one-way screw drives can be removed only with a special tool, or by drilling them out. One-way slotted drives are used on machine and sheet metal screws with round, truss, or oval heads. Sex bolts are also available with one-way slotted drives. 
   Phillips Pin       Phillips pin-head drives are designed like a standard Phillips drive, but have a protruding pin in the center. They are driven by a mating driver with a hollowed point into which the pin fits. 
   Socket Pin       Socket pin-head drives are designed like a standard socket drive, but have a protruding pin in the center. They are driven by a mating driver with a hollowed point into which the pin fits. 
   Spanner       Spanner drives have two holes separated by a fixed distance and are driven by a special mating spanner driver. 
   Torx® Pin       Torx pin-head drives are designed like a standard Torx drive, but have a protruding pin in the center. They are driven by a mating driver with a hollowed point into which the pin fits. 
   Tri-Wing®       The Tri-Wing® (Phillips Screw Company) drive uses a tamper-resistant design and requires a special three-winged driver.  
   Other / Proprietary Tamperproof Drive       Other, unlisted, or proprietary tamperproof drives. 
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Features
   Features       
   Your choices are...         
   Blind       Captive fastener allows joining in situations where the user only has access to one side of the target panel. 
   Broaching       Captive fastener - nut, screw or stud - accomplishes joining through a material removal process at time of installation. An example of a broaching captive fastener is a printed circuit board (PCB) captive nut that has knurled cutting-shanks. The nut is pressed into a drilled hole, and accomplishes fastening via interference fit. 
   Floating       The fastener is designed to compensate for mating misalignments. 
   Fluid-Tight Seal       Fastener includes an under head o-ring or similar technology to prevent liquids or gases from ingress or egress after tightening. 
   Flush-Mount       A flush-mount captive screw has a head that sits flatly against a mating panel's surface, providing a low-profile assembly, often for constrained-space or aesthetic reasons. 
   Jacking (Retractable)       A "Jacking" Captive Screw is a high-strength captive fastener designed for both panel retention and to perform a jacking / spring-ejected action upon panel removal. This combination of features facilitates disassembly. 
   Knobbed       Captive fastener has an external star-pattern ("star-knob") that allows the user a firm grasp with multiple fingers or by the cup of the hand. This allows for a more effective torquing action, and less user exertion. 
   Knurled       Either a series of straight ridges, a diamond criss-cross pattern, or a similar friction-increasing pattern is applied to the captive fastener's thumb-screw or thumb-nut surface. The increased friction facilitates finger torquing, and sometimes is also meant to improve the fastener's visual appearance. 
   Quarter-Turn       A 90-degree turn of the screw quickly secures or releases access panels, enclosure doors, and equipment coverings. 
   Self-Clinching       Captive fastener has an integrated mechanism (non-broaching) for deforming material and permanently locking into place. Example uses include sheet metal integration and printed circuit board (PCB) fastening. 
   Winged       Captive fastener has two protruding wings or ears that facilitate finger / thumb or hand torquing without the use of an additional tool. 
   Sold as Assembly       Captive screw, nut or stud is sold with an included lock washer, retainer, or other loose, non-integral hardware. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Fastener Standards
   Fastener Standards       
   Your choices are...         
   AIA / NAS       Dimensional and material standards for aircraft fasteners are developed by the Aerospace Industries Association (AIA) and/or its National Aerospace Standards Committee (NASC). All drawings and specifications have a NAS or NASM prefix. NAS is an acronym for National Aerospace Standards. NASM is an acronym for National Aerospace Standards, Metric. 
   AN / MS       Dimensional standards for aircraft fasteners are developed by the Aeronautical Standards Group. All drawings have a prefix of AN or MS. Products are suitable for army, navy, or air force use.  
   ASME / ANSI       The American Society of Mechanical Engineers (ASME) B18 standard specifies all ASME B18 fastener products with a single 18-digit PIN code system. Approved by the American National Standards Institute (ANSI) and adopted by the U.S. Department of Defense, the ASME B18.24 PIN system is a self-contained code that covers 788 unique B18 fastener types from 72 ASME B18 source documents. The PIN code system is fully parametric, uniform across all fastener types, and is intended as a digital alternative to the traditional plain text fastener product callout prescribed in the "Designation" or "Ordering" section of the applicable source document. 
   BS       Dimensional and material standards developed by the British Standards Institution.  Standards are designated with a BS prefix.  The British Standards International (BSI) Kitemark indicates that products are tested regularly against the requirements of an appropriate BSI standard, and that the manufacturer's quality system is assessed at least twice a year to ensure continued quality production.  
   DIN       DIN is an acronym for Deutsches Institut für Normung (DIN), a German national organization for standardization. Most metric fasteners are manufactured according to DIN standards. Although DIN predates the International Standards Organizations (ISO), DIN standards are being revised to more closely match ISO standards. Ordering DIN fasteners requires three pieces of information: the DIN identifier, which defines the style of the fastener; the material (e.g., 8.8 Steel, 316 Stainless, Hastelloy C276); and the coating or plating (if any). 
   ISO       The International Standards Organization (ISO) is a worldwide federation of national standards organizations from over 100 countries. ISO's mission is to facilitate the international exchange of goods and services, and to foster cooperation in the spheres of intellectual, technological, and economic activity. ISO standards for metric fasteners are gaining recognition rapidly. They will probably become global standards. 
   JIS       Japanese Industrial Standard (JIS) is largely based on DIN; however, some standards have been modified to meet the needs of the Japanese market. Most of the fasteners used in electronic equipment manufactured in Japan comply with the JIS standard. 
   SAE       Fasteners meet standards developed by the Society of Automotive Engineers (SAE), a worldwide organization that establishes industry standards for the testing, measurement, and design of automobiles and their components. 
   Other       Other unlisted, specialized, or proprietary fastener standards. 
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Accurate Screw Machine Corp. (ASM)
Accurate Screw Machine Corp. (ASM)