1/4"-20 Jam Nuts | McMaster-Carr

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84 Products

About Hex Nuts

Choose a hex nut with the right profile, material, and strength for your application.

Thin-Profile Hex Nuts

About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Medium-Strength Steel

These Grade 5 or Class 04 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Certificate Type	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-20	7/16"	5/32"	SAE Grade 5	ASME B18.2.2	Material Certificate with Traceable Lot Number	100	94846A029	00000


	Steel



			1/4"-20	7/16"	5/32"	SAE Grade 5	ASME B18.2.2	—	100	94846A201	0000

High-Strength Steel

Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.

Steel—Best for dry environments since moisture will cause these nuts to rust.

Zinc-Flake-Coated Steel—The most durable zinc coating, zinc flake is a multilayer finish that resists wear for long-term rust protection. Similar to zinc yellow-chromate, it won't hold up to harsh chemicals like stainless steel can.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	1/4"-20	7/16"	5/32"	SAE Grade 8	ASME B18.2.2	100	93839A029	000000


	Steel



			1/4"-20	7/16"	5/32"	SAE Grade 8	ASME B18.2.2	50	92052A110	0000


			Zinc-Flake-Coated Steel



					1/4"-20	7/16"	5/32"	SAE Grade 8	ASME B18.2.2	25	91935A110	0000

Low-Strength Steel

Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-20	7/16"	5/32"	SAE Grade 2	100	91078A029	00000


	Black-Oxide Steel



			1/4"-20	7/16"	5/32"	—	100	90475A110	00000


			Steel



					1/4"-20	7/16"	5/32"	SAE Grade 2	100	90494A029	0000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these nuts will hold up in just about any environment, including salt water and most chemicals.

	Wd.	Ht.	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	7/16"	5/32"	Material Certificate with Traceable Lot Number	100	91847A029	00000


	Black-Oxide 18-8 Stainless Steel



			1/4"-20	7/16"	5/32"	—	50	98514A029	00000


			Highly Corrosion-Resistant 316 Stainless Steel



					1/4"-20	7/16"	5/32"	Material Certificate with Traceable Lot Number	50	94805A029	0000


					Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel



							1/4"-20	7/16"	5/32"	—	25	90831A110	0000

Lightweight Aluminum

6061 Aluminum—One-third the weight of steel, these nuts are commonly used in robotics, automation, and other applications that have weight limitations. They're an alternative to stainless steel for rust resistance but are not as strong.

	Wd.	Ht.	Specs. Met	Pkg. Qty.		Pkg.
6061 Aluminum



	1/4"-20	7/16"	5/32"	ASME B18.2.2	5	91947A110	000000

Lightweight Corrosion-Resistant Titanium

The best of both worlds, these hex nuts are lightweight like aluminum and more corrosion resistant than 316 stainless steel.

Grade 2 Titanium—Because Grade 2 titanium is 99% pure, it's even more corrosion resistant than other common titanium grades, such as Grades 5 and 9. These nuts are ideal for use in chemical-processing and water-treatment facilities since they stand up to strong acids and other harsh chemicals.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Grade 2 Titanium



	1/4"-20	7/16"	5/32"	1	91907A110	00000

Bronze

Silicon Bronze—More resistant to salt water than brass, these nuts are a good choice for marine environments. They are also stronger than brass and more resistant to abrasion and wear. Choose them for machinery with rotating parts or other applications where nearby components may rub against the nut.

	Wd.	Ht.	Specs. Met	Pkg. Qty.		Pkg.
Silicon Bronze



	1/4"-20	7/16"	5/32"	ASME B18.2.2	25	91952A110	000000

Brass

Brass—Conductive and nonmagnetic, brass nuts are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures. They're also softer than most metals, so they won't damage other fastening components.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Brass



	1/4"-20	7/16"	5/32"	50	92174A029	000000

Plastic

Nylon 6/6— The most common plastic nuts, these are good for general purpose fastening. They are slippery and abrasion resistant, so they thread on smoothly and stand up to daily wear and tear. Nylon will swell and weaken when exposed to moisture, so these nuts are best for dry environments.

				Temp., ° F
	Thread Size	Wd.	Ht.	Min.	Max.	Choose a Color	Pkg. Qty.		Pkg.
Nylon 6/6



		1/4"-20	7/16"	5/32"	-40	185	Black, Off-White	100	96557A164	000000

Left-Hand-Thread Hex Nuts

These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening.

Corrosion-Resistant Stainless Steel

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Highly Corrosion-Resistant 316 Stainless Steel



	1/4"-20	7/16"	7/32"	1	95355A215	000000

Thin-Profile Nylon-Insert Locknuts

About half the height of standard-profile locknuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.

High-Strength Steel

Rated Grade 8, Grade C, or Class 10, these locknuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

	Wd.	Ht.	Fastener Strength Grade/Class	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	1/4"-20	7/16"	13/64"	SAE Grade 8	Not Rated	100	94945A205	000000


	Black-Oxide Steel



			1/4"-20	7/16"	13/64"	SAE Grade 8	250	25	94945A131	00000

Low-Strength Steel

Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Black-Zinc-Plated Steel—The dark zinc plating withstands occasional exposure to moisture while creating a finished look.

Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.

	Wd.	Ht.	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-20	7/16"	13/64"	220	100	90566A029	00000


	Black-Zinc-Plated Steel



			1/4"-20	7/16"	13/64"	220	25	94627A160	0000


			Black-Corrosion-Resistant-Coated Steel



					1/4"-20	7/16"	13/64"	220	5	91581A355	0000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

316 Stainless Steel—Our most corrosion-resistant nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

	Wd.	Ht.	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	7/16"	13/64"	220	50	90101A230	00000


	Black-Oxide 18-8 Stainless Steel



			1/4"-20	7/16"	13/64"	220	50	90101A121	00000


			316 Stainless Steel



					1/4"-20	7/16"	13/64"	220	25	97367A113	0000

Jam Nuts for Turnbuckles

Tighten these nuts against the turnbuckle body to prevent the end fitting from unscrewing.

For Steel Turnbuckles

Image of Product. Front orientation. Turnbuckles. Jam Nuts for Turnbuckles.

					Left- and Right-Hand Thread Direction
	Thread Size	Wd.	Ht.	Includes		Each
Grade 2 Steel



		1/4"-20	7/16"	5/32"	One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut	2995T896	00000

For Galvanized Steel Turnbuckles

					Left- and Right-Hand Thread Direction
	Thread Size	Wd.	Ht.	Includes		Each
Grade 2 Galvanized Steel



		1/4"-20	7/16"	5/32"	One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut	3000T752	00000

For 316 Stainless Steel Turnbuckles

				Right-Hand Thread Direction		Left-Hand Thread Direction
	Thread Size	Wd.	Ht.		Each		Each
316 Stainless Steel



		1/4"-20	7/16"	7/32"	3022T722	00000	3022T712	00000

Thin-Heavy-Profile Hex Nuts

About half the height of standard-profile hex nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Extreme-Strength Steel

These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-20	1/2"	11/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	5	91879A029	000000


	Steel



			1/4"-20	1/2"	11/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A130	0000

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Black-Oxide Steel



	1/4"-20	1/2"	11/64"	—	25	91015A029	00000


	Steel



			1/4"-20	1/2"	11/64"	SAE Grade 2	100	90502A029	0000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	1/2"	11/64"	25	91851A620	00000

Brass

	Wd.	Ht.	Pkg. Qty.		Pkg.
Brass



	1/4"-20	1/2"	11/64"	25	92683A029	00000

Mil. Spec. Thin-Profile Hex Nuts

These nuts are manufactured and tested to strict U.S. military standards for material and construction. About half the height of standard-profile nuts, they fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	Wd.	Ht.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	7/16"	5/32"	MS35691-3	Fed. Spec. FF-N-836	5	92101A210	000000

Left-Hand-Thread Thin-Profile Hex Nuts

These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Medium-Strength Steel

These Grade 5 or Class 04 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-20	7/16"	5/32"	SAE Grade 5	100	99612A100	000000

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	7/16"	5/32"	SAE Grade 2	50	90083A029	00000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	7/16"	5/32"	5	94450A218	00000


	Highly Corrosion-Resistant 316 Stainless Steel



			1/4"-20	7/16"	5/32"	1	93031A162	0000

Low-Profile Knurled-Head Thumb Nuts

Twist these thumb nuts into spaces without a lot of clearance. They have a short, slip-resistant head, so you can grip them easily and make controlled adjustments in cramped spots. You can also use them as jam nuts by threading them against another nut to hold it in place.

Steel

Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.

		Collar
	Thread Size	Dia.	Ht.	Head Dia.	Ht.	Pkg. Qty.		Pkg.
Black-Oxide Steel



		1/4"-20	1/2"	1/16"	3/4"	7/32"	1	92815A115	00000

High-Torque Low-Profile Knurled-Head Thumb Nuts

Twist the slip-resistant head by hand, then insert a T-handle hex key into one of the holes to apply extra torque for a tight fit. Nuts have a low-profile head that fits into cramped spaces. You can also use them as jam nuts by threading them against another nut to hold it in place.

Steel

Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.

	Head Dia.	Ht.	No. of Holes	Hole Dia.		Each
Black-Oxide Steel



	1/4"-20	7/8"	1/4"	4	3/32"	94775A029	00000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Head Dia.	Ht.	No. of Holes	Hole Dia.		Each
18-8 Stainless Steel



	1/4"-20	7/8"	1/4"	4	3/32"	91725A110	00000

Thin-Profile Flex-Top Locknuts for Heavy Vibration

About two-thirds the height of standard flex-top nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The top section expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. As a result, they're suitable for use in equipment with constant, vigorous vibration, such as engines. These locknuts are reusable a handful of times, but the holding power decreases with each use.

Steel

These locknuts have equivalent strength to Grade 8 and Class 10 steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Cadmium-Plated Steel—These locknuts have good lubricity to thread on smoothly and ease installation. The plating also creates a barrier against rust that's comparable to zinc-yellow-chromate plating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Cadmium-Plated Steel



	1/4"-20	7/16"	7/32"	25	94830A510	000000


	Steel



			1/4"-20	7/16"	7/32"	10	94830A128	0000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	7/16"	7/32"	5	94140A131	000000

Thin-Heavy-Profile Nylon-Insert Locknuts

About half the height of standard-profile locknuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.

Low-Strength Steel

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

	Wd.	Ht.	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-20	1/2"	9/32"	250	100	90652A029	000000


	Black-Corrosion-Resistant-Coated Steel



			1/4"-20	1/2"	9/32"	250	5	90652A810	0000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Wd.	Ht.	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-20	1/2"	9/32"	250	25	90098A110	000000

Knurled-Head Thumb Nuts

Get a good grip on these nuts, even with oily fingers. They have a raised, slip-resistant head, so you can tighten them by hand and make controlled adjustments. Knurled-head nuts have a smaller profile than wing nuts, so they fit in tighter spots.

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant thumb nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

		Collar
	Thread Size	Dia.	Ht.	Head Dia.	Ht.	Threading	Thread Dp.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		1/4"-20	1/2"	1/4"	3/4"	1/2"	Fully Threaded	—	1	91833A134	00000


		1/4"-20	1/2"	1/4"	1"	1/2"	Fully Threaded	—	1	91833A159	0000
		1/4"-20	1/2"	1/2"	3/4"	3/4"	Partially Threaded	1/4"	1	91833A158	0000
		1/4"-20	1/2"	1/2"	1"	3/4"	Partially Threaded	1/4"	1	91833A161	0000
		1/4"-20	1/2"	3/4"	1"	1"	Partially Threaded	1/2"	1	91833A138	0000


		Black-Oxide 18-8 Stainless Steel



				1/4"-20	1/2"	1/4"	3/4"	1/2"	Fully Threaded	—	1	92088A152	0000


				1/4"-20	1/2"	1/4"	1"	1/2"	Fully Threaded	—	1	92088A154	0000
				1/4"-20	1/2"	3/4"	1"	1"	Partially Threaded	1/2"	1	92088A156	0000


				Highly Corrosion-Resistant 316 Stainless Steel



						1/4"-20	1/2"	1/4"	3/4"	1/2"	Fully Threaded	—	1	92533A106	00000

Plastic

Reinforced Acetal—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These nuts are reinforced with an aluminum threaded insert, so they can handle more torque than other plastic nuts and won't crack during installation.

Nylon—These nuts thread on smoothly and resist abrasion to stand up to scratches and bumps. Nylon will swell and weaken when exposed to moisture, so it's best for dry environments.

		Collar
	Thread Size	Dia.	Ht.	Head Dia.	Ht.	Color	Threading	Insert Material	Pkg. Qty.		Pkg.
Reinforced Acetal



		1/4"-20	35/64"	1/16"	1"	23/64"	Black	Fully Threaded	Aluminum	10	93886A104	000000


		1/4"-20	35/64"	3/16"	3/4"	23/64"	Black	Fully Threaded	Aluminum	10	93886A140	00000


		Nylon



				1/4"-20	1/2"	1/4"	3/4"	1/2"	Black	Fully Threaded	—	1	93995A360	0000


				1/4"-20	1/2"	3/4"	1"	1"	Black	Fully Threaded	—	1	93995A370	0000

Hex-Head Thumb Nuts

Apply extra torque to these nuts to prevent accidental loosening. Twist them on by hand, then crank with a wrench for a tight fit. The flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts.

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

		Collar
	Thread Size	Dia.	Ht.	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		1/4"-20	15/32"	7/32"	9/16"	3/8"	1	94365A390	00000

Clevis End Fittings for Turnbuckles—Not for Lifting

Forged 316 Stainless Steel

Bolt and Cotter

Pin Closure

Forged fittings are stronger than cast and wire drawn fittings.

316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.

	Clevis Pin						Right-Hand Thread Direction		Left-Hand Thread Direction
Wt. Cap., lb.	Dia.	Closure Method	Clevis Inside Wd.	Thread Size	Thread Lg.	Overall Lg.		Each		Each



	500	1/4"	Bolt, Cotter Pin	7/16"	1/4"-20	2 5/8"	4 1/4"	3022T835	000000	3022T827	000000

Cast 316 Stainless Steel

Cotter Ring

Closure

316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.

	Clevis Pin						Right-Hand Thread Direction		Left-Hand Thread Direction
Wt. Cap., lb.	Dia.	Closure Method	Clevis Inside Wd.	Thread Size	Thread Lg.	Overall Lg.		Each		Each



	440	1/4"	Cotter Ring	7/16"	1/4"-20	2 1/8"	3 1/8"	30315T938	000000	30315T932	000000

Flanged Knurled-Head Thumb Nuts

The slip-resistant head is easy to grip, while the flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts.

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Passivated 18-8 Stainless Steel—With an added layer of protection, these nuts stand up to strong acids and other harsh chemicals.

		Collar
	Thread Size	Dia.	Ht.	Head Dia.	Ht.	Threading	Thread Dp.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		1/4"-20	15/32"	7/32"	9/16"	3/8"	Fully Threaded	—	1	95150A170	00000


		1/4"-20	15/32"	7/32"	9/16"	1/2"	Partially Threaded	5/16"	1	95150A124	0000


		Black-Oxide 18-8 Stainless Steel



				1/4"-20	15/32"	7/32"	9/16"	3/8"	Fully Threaded	—	1	95150A154	0000


				Passivated 18-8 Stainless Steel



						1/4"-20	15/32"	7/32"	9/16"	3/8"	Fully Threaded	—	1	95150A144	0000


						Highly Corrosion-Resistant 316 Stainless Steel



								1/4"-20	15/32"	7/32"	9/16"	3/8"	Fully Threaded	—	1	99937A106	00000

Brass

Brass—With a warm, polished look, these nuts are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. It is also softer than other metals, so it's easier to thread together.

Zinc-Plated Brass—The zinc plating offers better corrosion resistance than plain brass to stand up to solvents and mild chemicals.

		Collar
	Thread Size	Dia.	Ht.	Head Dia.	Ht.	Threading	Pkg. Qty.		Pkg.
Brass



		1/4"-20	9/16"	7/32"	5/8"	3/8"	Fully Threaded	10	92741A160	000000


		Zinc-Plated Brass



				1/4"-20	15/32"	7/32"	9/16"	3/8"	Fully Threaded	1	92741A212	00000

Thin-Heavy-Profile Flex-Top Locknuts for Heavy Vibration

About two-thirds the height of standard flex-top nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. Because of the thin profile, you can also use them as jam nuts by threading them against a hex nut to hold it in place. The top section expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. As a result, they're suitable for use in equipment with constant, vigorous vibration, such as engines. These locknuts are reusable a handful of times, but the holding power decreases with each use.

Steel

These locknuts have equivalent strength to Grade 8 and Class 10 steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Cadmium-Plated Steel



	1/4"-20	1/2"	7/32"	25	94828A410	000000

Eye End Fittings for Turnbuckles—Not for Lifting

Forged 316 Stainless Steel

Oval Eye

Forged fittings are stronger than wire drawn fittings.

316 stainless steel is the most corrosion resistant and has excellent resistance to chemicals and salt water.

Oval Eye—Oval eyes provide more room to attach connectors.

							Right-Hand Thread Direction		Left-Hand Thread Direction
Wt. Cap., lb.	Eye Shape	Eye ID	Eye Inside Lg.	Thread Size	Thread Lg.	Overall Lg.		Each		Each



	500	Oval	5/16"	13/16"	1/4"-20	2.65"	4 3/16"	3022T818	000000	3022T811	000000

Welded 316 Stainless Steel

Round Eye

316 stainless steel is the most corrosion resistant and has excellent resistance to chemicals and salt water.

						Right-Hand Thread Direction		Left-Hand Thread Direction
Wt. Cap., lb.	Eye Shape	Eye ID	Thread Size	Thread Lg.	Overall Lg.		Each		Each



	440	Round	7/16"	1/4"-20	2"	3 3/16"	———	0	30315T945	00000


	440	Round	7/16"	1/4"-20	2 1/16"	3 3/16"	30315T952	00000	———	0

Hook End Fittings for Turnbuckles—Not for Lifting

Forged 316 Stainless Steel

Image of Attribute. Front orientation. Contains Annotated.

Forged fittings are stronger than cast and wire drawn fittings.

316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.

					Right-Hand Thread Direction		Left-Hand Thread Direction
Wt. Cap., lb.	Hook Opening Wd.	Thread Size	Thread Lg.	Overall Lg.		Each		Each



	200	3/8"	1/4"-20	2.05"	3 3/16"	3022T869	00000	3022T862	00000

Unthreaded Stub End Fittings for Turnbuckles—Not for Lifting

Weld these stubs to parts or use them to push objects apart instead of pulling them together.

316 Stainless Steel

316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.

	Stub					Right-Hand Thread Direction		Left-Hand Thread Direction
Wt. Cap., lb.	Dia.	Lg.	Thread Size	Thread Lg.	Overall Lg.		Each		Each



	500	3/16"	2"	1/4"-20	2 1/2"	4 1/2"	3022T851	000000	———	0


	500	1/4"	2"	1/4"-20	2 1/2"	4 1/2"	———	0	3022T843	000000