Nuts Specifications

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Type


	Type
	Your choices are...
	Acorn Nut		Acorn nuts are domed nuts that seal the threads inside of the nut. They help protect nut threads from corrosion.
	Anchor Nut		Anchor nuts expand so that a portion of the nut's body presses tightly against the wall of the hole in which it located. This expansion occurs when an anchor bolt is tightened down on the anchor nut.
	Castle Nut		Castle nuts have slots or notches that are cut into one end to allow a cotter pin or safety wire to assist in fastening. Castle nuts resemble a chess-playing piece and are also known as castellated or slotted locknuts.
	Cage Nut		Cage nuts contain a captive nut that floats in a cage to allow for misalignment and design variations.
	Coupling Nut		Coupling nuts have long, hexagonal bodies. They are used to hold a threaded rod or machine screw at each end.
	Cylinder Nut		Cylinder nuts are similar to coupling nuts, but have cylindrical bodies instead of hexagonal ones.
	Finger Nut		Finger nuts are sometimes called fly nuts or thumb nuts.
	Flange Nut		Flanges are locking nuts with a ring that is inserted into the threads.
	Hex		Hex nuts or hexagonal nuts are six-sided.
	Jam Nut		Jam nuts are typically half the height of a standard nut. Often, these locknuts are pushed-up or jammed against a standard nut in a fastener assembly to provide an additional securing force.
	Jet Nut (K-Nut)		Jet nuts or K-nuts are smaller, flanged-type locknuts that are often used in aerospace or automotive racing applications.
	Kep Nut		Kep nuts typically have an attached or captive star-type locking washer. Typically, the washer is able to move freely.
	Locknut		Locknuts are prevailing-torque fasteners that resist loosening under vibration and torque. Most locknuts feature friction-increasing bearing surfaces (e.g., pitted grooves on flanges) or special internal thread-geometries. These elements are designed to interlock with protruding pieces at mating surfaces, or to resist thread vibration. This provides for secure fastening while preventing fastener slippage.
	Nylon Insert Nut		Nylon insert nuts use a plastic insert to capture the bolt or screw. Nylon nuts are used in applications where vibration or motion could loosen or undo the nut.
	Push Nut		Push nuts are non-threaded fasteners that are pushed onto an axle or other non-threaded rod. They push on easily, but are difficult to remove.
	Round Nut		Round nuts are cylindrical fasteners that can be tightened in several different ways. They can be tightened with a wrench that fits into parallel slots on the outside wall, an Allen key that fits into one end of the nut, or a wrench that fits a nut's hex-shaped sides.
	Self-Clinching Nut		Self-clinching nuts are pressed into a hole and held fast against the wall by the force exerted upon them. They are used in applications where the sheet metal is too thin to be tapped for threads. Self-clinching nuts are sometimes called press nuts.
	Speed Nuts (Sheet metal / Tinnerman Nuts)		Speed nuts (sheet metal nuts, tinnerman nuts) can be quickly pushed into place using deformable teeth instead of standard threads. These fasteners are used for light-duty applications, either alone or with a traditional threaded nut in a fastener assembly.
	Square Nut		Square nuts are four-sided fasteners.
	Tee Nut		Tee nuts are threaded barrels with a pronged flange at one end. The prongs embed themselves into the surface that is held as force is applied to the nut. Tee nuts are also called blind nuts.
	U-Type Nut		U-type nuts are specialty nuts used on rack-mounted equipment. The nut is integral with the mounting and has a tight U-shaped clip that presses on thin sheet metal.
	Washer Nut		Washer nuts attach to a free-spinning or fixed washer.
	Weld Nut		Weld nuts have projections or tabs that are used for attachment to a substrate. Weld nuts can be square, hexagonal, or round.
	Wing Nut		Wing nuts have two tabs or wings that extend outwards from the center and allow the user to tighten the nut by hand.
	Other		Other unlisted, specialized or proprietary types of nuts.
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Size


	Inch Size
	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 Size
	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.
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	Thread Direction
	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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Material / Finish


	Material
	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		Copper base alloys are metals with copper as their main alloying metal, and one or more other metals such as tin, zinc, or phosphorus. Silicon bronze is a 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.
	FRP		Fiber-reinforced plastic (FRP) or fiber-reinforced polyurethane is a composite material with reinforcing fibers. It is stronger than many plastics which do not contain reinforcing additions. When made with polyurethane, FRP is a tough and wear-resistant material.
	Inconel® / Incoloy®		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®		Monel^® (Special Metals Corporation) is a proprietary, high-strength material that offers resistance to a range of corrosive media such as seawater, hydrofluoric and sulfuric acids, and alkalis.
	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.
	Plastic		Products are made of thermoplastic materials.
	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.
	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 fluropolymer. PVDF has similar properties to other fluropolymers, 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).
	Rubber		Synthetic rubber includes grades such as neoprene, silicone, and Norprene^® (Norton Co.). Rubber fasteners are used in specialized applications for vibration damping and silencing.
	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.
	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 Metal		Other unlisted, specialized, or proprietary metallic materials.
	Other Plastic		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.
	Anti-Galling Coating		Anti-galling is a fastener thread surface-damage prevention feature. It prevents or reduces friction-caused thread damage to the bolt and mated nut. This property comes from a special material surface treatment that lowers the coefficient of friction between mating surfaces, by use of treatments like zinc or tin.
	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.
	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.
	Nickel Plated		Nickel plating is a common form of electrolytic deposition.
	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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Features



	Your choices are...
	Sold as Assembly		Locknuts are sold as standard products with non-integral or secondary-material hardware assembly components (e.g., a washer or plastic insert) to improve mechanical performance, or to make purchasing compatible hardware easier.
	Vibration Dampening		Vibration dampening reduces or eliminates thread damage caused by long-term shaking or movement of the system for the integrated nut. This fastener feature uses a special mechanical design or integral dampening materials such as soft metals, plastics or elastomers.
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Fastener Standards


	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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Type:

Inch Size:

Metric Size:

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Material:

Finish:

Features:

Standards:

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