3/4"-10 Standoffs | McMaster-Carr

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99 Products

Coupling Nuts

Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Low-Strength Steel

Rated Grade 2 or lower, these are about half as strong as medium-strength steel coupling nuts. Use them with threaded rods that have a comparable 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—A dark, matte coating creates a finished look. Nuts offer minimal corrosion resistance, so they're best for dry environments.

Hot-Dipped Galvanized Steel—Combines the strength of steel with the rust resistance of stainless steel. These nuts are an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals. Use with other hot-dipped galvanized fasteners to ensure the threads mate tightly.

							Each
	Thread Size	Lg.	Wd.	Threading	Min. Thread Lg.		1-9	10-49	50-Up
Zinc-Plated Steel



		3/4"-10	1 1/2"	1 1/4"	Fully Threaded	—	000000000	00000	00000	00000


		3/4"-10	2 1/4"	1"	Fully Threaded	—	000000000	0000	0000	0000
		3/4"-10	2 1/4"	1 1/4"	Fully Threaded	—	000000000	0000	0000	0000
		3/4"-10	3"	1"	Fully Threaded	—	000000000	0000	0000	0000
		3/4"-10	5"	1 1/4"	Partially Threaded	2 3/8"	000000000	00000	00000	00000


		Black-Oxide Steel



				3/4"-10	1 7/8"	1 1/4"	Fully Threaded	—	000000000	0000	0000	0000


				3/4"-10	2 1/4"	1"	Fully Threaded	—	000000000	0000	0000	0000


				Hot-Dipped Galvanized Steel



						3/4"-10	2 1/4"	1"	Fully Threaded	—	000000000	0000	0000	0000


						3/4"-10	3"	1"	Fully Threaded	—	000000000	0000	0000	0000

Medium-Strength Steel

These Grade 5 or Class 8 nuts are about twice as strong as low-strength steel coupling nuts. Use them with threaded rods that have a comparable 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.

							Each
	Thread Size	Lg.	Wd.	Fastener Strength Grade/Class	Threading		1-9	10-49	50-Up
Zinc-Plated Steel



		3/4"-10	2 1/4"	1"	SAE Grade 5	Fully Threaded	000000000	00000	00000	00000


		Hot-Dipped Galvanized Steel



				3/4"-10	2 1/4"	1"	SAE Grade 5	Fully Threaded	000000000	00000	00000	00000

High-Strength Steel

Rated Grade 8 or Class 10, these are about 25% stronger than medium-strength steel coupling nuts. Use them with threaded rods that have a comparable 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.

							Each
	Thread Size	Lg.	Wd.	Fastener Strength Grade/Class	Threading		1-9	10-49	50-Up
Zinc-Plated Steel



		3/4"-10	2 1/4"	1 1/8"	SAE Grade 8	Fully Threaded	000000000	000000	000000	000000

Extreme-Strength Steel

Made from Grade 2H steel, these are about 20% stronger than high-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

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

							Each
	Thread Size	Lg.	Wd.	Fastener Strength Grade/Class	Threading		1-9	10-49	50-Up
Steel



		3/4"-10	2 1/4"	1 1/4"	ASTM Grade 2H	Fully Threaded	000000000	000000	000000	000000

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—The most corrosion-resistant stainless steel coupling nuts we offer, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

							Each
	Thread Size	Lg.	Wd.	Threading	Min. Thread Lg.		1-9	10-49	50-Up
18-8 Stainless Steel



		3/4"-10	2 1/4"	1"	Fully Threaded	—	000000000	00000	00000	00000


		3/4"-10	4"	1 1/8"	Partially Threaded	3/4"	000000000	00000	00000	00000
		3/4"-10	5"	1 1/8"	Partially Threaded	3/4"	000000000	00000	00000	00000
		3/4"-10	8"	1 1/8"	Partially Threaded	3/4"	000000000	000000	000000	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				3/4"-10	2 1/4"	1"	Fully Threaded	—	000000000	00000	00000	00000

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.

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-49	50-Up
6061 Aluminum



		3/4"-10	2 1/4"	1"	Fully Threaded	000000000	000000	000000	000000

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.

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-49	50-Up
Brass



		3/4"-10	2 1/4"	1"	Fully Threaded	000000000	000000	000000	000000

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread sizes or types, such as fine to coarse threads, on parts without changing gender. These adapters can also be used as standoffs to position components in assemblies and to create space between parts. They have an external hex, so you can tighten them with a wrench.

Black-Oxide Steel—Black oxide steel adapters have a finish that matches the aesthetics of your system and won’t chip or rub off. They resist rust better than plain steel in indoor and dry environments. However, they will corrode outdoors.

Aluminum—At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.

18-8 Stainless Steel—18-8 stainless steel adapters resist corrosion in wet environments but will corrode when exposed to salt water and chemicals. They may be mildly magnetic.

316 Stainless Steel—316 stainless steel adapters are for use in wet environments and have the best corrosion resistance. Unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and chemicals. They may be mildly magnetic.

ASTM A108, ASTM A276, ASTM A582, and ASTM B211—Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.

			Thread Lg.		Gender		Thread Fit		Hex
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	(A)	(B)	Size	Length	Specs. Met	Tensile Strength, psi	Hardness		Each
Black-Oxide Steel



		3/8"-16	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A108	Not Rated	Rockwell B65	000000000	000000


		Aluminum



				3/8"-16	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM B211	45,000	Rockwell B56	000000000	00000


				1/2"-13	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM B211	45,000	Rockwell B56	000000000	00000


				18-8 Stainless Steel



						3/8"-16	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A582	85,000	Rockwell B80	000000000	00000


						1/2"-13	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A582	85,000	Rockwell B80	000000000	00000


						316 Stainless Steel



								3/8"-16	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A276	75,000	Rockwell B83	000000000	00000


								1/2"-13	3/4"-10	3/4"	1"	Male	Female	Unified Standard Class 2A	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A276	75,000	Rockwell B83	000000000	00000

Inch-to-Inch Female Hex Thread Adapters

Connect two differently sized male-threaded parts, such as threaded rods, and tighten with a standard wrench. The threads on these adapters have various sizes and spacing, so you can increase or decrease thread size or adapt from coarse to fine threading. You can also use them to change the gender of a connection from male to female. Small adapters can work as threaded standoffs, which position and separate circuit boards and other components in assemblies.

Black-Oxide Steel—Black-oxide steel adapters have a finish that won’t chip or rub off. They match the aesthetics of many systems and resists rust in indoor and dry environments.

Zinc-Plated Steel—Zinc-plated steel adapters resist corrosion until the plating wears away and are often used in dry environments.

Aluminum—Aluminum adapters are about one third of the weight of steel adapters and resist corrosion in wet environments.

18-8 Stainless Steel—18-8 stainless steel adapters withstand wet environments but will corrode when exposed to salt water and other chloride solutions.

316 Stainless Steel—316 stainless steel adapters are ideal in wet environments and will not corrode when exposed to salt water or harsh chemicals.

ASTM A108, ASTM A276, ASTM A582, ASTM B211, and ASTM B633—Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.

			Thread Lg.		Thread Fit		Hex								Each
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	Size	Length	Specs. Met	Tensile Strength, psi	Hardness	Certificate Form	Certificate Type		1-9	10-Up
Black-Oxide Steel



		1/2"-13	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A108	Not Rated	Rockwell B65	—	—	000000000	00000	00000


		5/8"-11	3/4"-10	5/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2"	ASTM A108	Not Rated	Rockwell B65	—	—	000000000	0000	0000


		Zinc-Plated Steel



				1/2"-13	3/4"-10	1/2"	41/64"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A108, ASTM B633	75,000	Rockwell B65	—	—	000000000	0000	0000


				5/8"-11	3/4"-10	5/8"	41/64"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A108, ASTM B633	75,000	Rockwell B65	—	—	000000000	0000	0000
				3/4"-10	7/8"-9	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	1 3/4"	ASTM A108, ASTM B633	75,000	Rockwell B65	—	—	000000000	0000	0000
				3/4"-10	1"-8	3/4"	55/64"	Unified Standard Class 2B	Unified Standard Class 2B	1 3/8"	2"	ASTM A108, ASTM B633	75,000	Rockwell B65	—	—	000000000	00000	00000
				3/4"-10	1 1/4"-7	3/4"	1 1/16"	Unified Standard Class 2B	Unified Standard Class 2B	1 5/8"	3"	ASTM A108, ASTM B633	75,000	Rockwell B65	—	—	000000000	00000	00000


				Aluminum



						3/8"-16	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM B211	45,000	Rockwell B56	—	—	000000000	0000	0000


						3/8"-24	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM B211	45,000	Rockwell B56	Digital	Material Certificate with Traceable Lot Number	000000000	0000	0000
						1/2"-13	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM B211	45,000	Rockwell B56	—	Material Certificate with Traceable Lot Number	000000000	0000	0000
						1/2"-20	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM B211	45,000	Rockwell B56	—	—	000000000	0000	0000
						1/2"-28	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM B211	45,000	Rockwell B56	—	—	000000000	0000	0000
						5/8"-11	3/4"-10	5/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2"	ASTM B211	45,000	Rockwell B56	—	—	000000000	0000	0000
						3/4"-10	3/4"-16	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	2"	ASTM B211	45,000	Rockwell B56	—	—	000000000	00000	00000


						18-8 Stainless Steel



								3/8"-16	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A582	85,000	Rockwell B80	—	—	000000000	0000	0000


								3/8"-24	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000
								3/8"-32	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000
								1/2"-13	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000
								1/2"-20	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000
								1/2"-28	3/4"-10	1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000
								5/8"-11	3/4"-10	5/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2"	—	Not Rated	Rockwell B55	—	—	000000000	00000	00000
								3/4"-10	3/4"-16	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	2"	ASTM A582	85,000	Rockwell B80	Digital	Material Certificate with Traceable Lot Number	000000000	00000	00000
								3/4"-10	7/8"-9	3/4"	7/8"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A582	85,000	Rockwell B80	Digital	Material Certificate with Traceable Lot Number	000000000	00000	00000
								3/4"-10	1"-8	3/4"	1"	Unified Standard Class 2B	Unified Standard Class 2B	1 3/8"	2 1/2"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000
								3/4"-10	1 1/4"-7	3/4"	1 1/16"	Unified Standard Class 2B	Unified Standard Class 2B	1 5/8"	3"	ASTM A582	85,000	Rockwell B80	—	—	000000000	00000	00000


								316 Stainless Steel



										3/8"-16	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	0000


										3/8"-24	3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A276	75,000	Rockwell B83	Digital	Material Certificate with Traceable Lot Number	000000000	00000	00000
3/8"-32										3/4"-10	3/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	1 1/2"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	00000
1/2"-13	3/4"-10									1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	00000
1/2"-20	3/4"-10									1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A276	75,000	Rockwell B83	Digital	Material Certificate with Traceable Lot Number	000000000	00000	00000
1/2"-28	3/4"-10									1/2"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2 1/4"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	00000
5/8"-11	3/4"-10									5/8"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1"	2"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	00000
3/4"-10	3/4"-16									3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	2"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	00000
3/4"-10	7/8"-9									3/4"	7/8"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	2 1/4"	ASTM A276	75,000	Rockwell B83	Digital	Material Certificate with Traceable Lot Number	000000000	00000	00000
3/4"-10	1"-8									3/4"	1"	Unified Standard Class 2B	Unified Standard Class 2B	1 3/8"	2 1/2"	ASTM A276	75,000	Rockwell B83	Digital	Material Certificate with Traceable Lot Number	000000000	00000	00000
3/4"-10	1 1/4"-7									3/4"	1 1/16"	Unified Standard Class 2B	Unified Standard Class 2B	1 5/8"	3"	ASTM A276	75,000	Rockwell B83	—	—	000000000	00000	00000

Round Coupling Nuts

Less bulky than hex coupling nuts, these have a smooth, round body that fits in tight spots. Their finished appearance makes them a common choice for decorative applications. Tighten by hand, or use soft-jaw pliers to avoid marring the outside surface. Also known as extension nuts, they are commonly used to connect lengths of threaded rod and join threaded parts.

Steel

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

							Each
	Thread Size	Lg.	OD	Threading	Specs. Met		1-9	10-Up
Black-Oxide Steel



		3/4"-10	1 1/4"	63/64"	Fully Threaded	ASTM A108	000000000	000000	000000


		3/4"-10	2"	63/64"	Fully Threaded	ASTM A108	000000000	00000	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.

							Each
	Thread Size	Lg.	OD	Threading	Specs. Met		1-9	10-Up
18-8 Stainless Steel



		3/4"-10	1 1/4"	63/64"	Fully Threaded	ASTM A582	000000000	000000	000000


		3/4"-10	2"	63/64"	Fully Threaded	ASTM A582	000000000	00000	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				3/4"-10	1 1/4"	63/64"	Fully Threaded	ASTM A276	000000000	00000	00000


				3/4"-10	2"	63/64"	Fully Threaded	ASTM A276	000000000	00000	00000

Inch-to-Inch Male Hex Thread Adapters

Need to join two female-threaded parts, such as coupling nuts, with dissimilar inch thread sizes? Attach them to these adapters and tighten the exterior hex nut for a secure connection. You can also use these adapters to change the gender of a mating part from female to male, increase or decrease the thread size, or convert the threads from fine to coarse (and vice versa). The smaller adapters act as threaded standoffs, positioning and separating circuit boards and other components in assemblies.

Black-Oxide Steel—Choose black-oxide steel adapters to match the aesthetics of your system or for their mild corrosion resistance. The finish won't chip or rub off. They resist rust in indoor and dry environments, but avoid using them in corrosive environments.

Aluminum—At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.

18-8 Stainless Steel—18-8 stainless steel adapters resist corrosion caused by water. They're good for wet and damp environments but will corrode when exposed to salt water and other chloride solutions.

316 Stainless Steel—316 stainless steel adapters have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel adapters, but unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and harsh chemicals.

			Thread Lg.		Thread Fit		Hex
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	Size	Length	Specs. Met	Tensile Strength, psi	Hardness	Certificate Form	Certificate Type		Each
Black-Oxide Steel



		3/8"-16	3/4"-10	5/8"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM A108	78,000	Rockwell B85	—	—	000000000	000000


		1/2"-13	3/4"-10	3/4"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM A108	78,000	Rockwell B85	Digital	Material Certificate with Traceable Lot Number	000000000	00000


		Aluminum



				3/8"-16	3/4"-10	5/8"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM B211	45,000	Rockwell B56	Digital	Material Certificate with Traceable Lot Number	000000000	00000


				1/2"-13	3/4"-10	3/4"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM B211	45,000	Rockwell B56	—	Material Certificate with Traceable Lot Number	000000000	00000


				18-8 Stainless Steel



						3/8"-16	3/4"-10	5/8"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM A582	85,000	Rockwell B80	Digital	Material Certificate with Traceable Lot Number	000000000	00000


						1/2"-13	3/4"-10	3/4"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM A582	85,000	Rockwell B80	Digital	Material Certificate with Traceable Lot Number	000000000	00000


						316 Stainless Steel



								3/8"-16	3/4"-10	5/8"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM A276	75,000	Rockwell B83	Digital	Material Certificate with Traceable Lot Number	000000000	00000


								1/2"-13	3/4"-10	3/4"	3/4"	Unified Standard Class 2A	Unified Standard Class 2A	1 1/8"	11/16"	ASTM A276	75,000	Rockwell B83	Digital	Material Certificate with Traceable Lot Number	000000000	00000

Weld Nuts

Add permanent threads to thin metal with our go-to weld nuts. Unlike press-fit and rivet nuts, these nuts fuse to the base metal, so they won’t twist and pull out. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter. You can also install them on thick pieces of metal.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

				Collar
	Thread Size	Wd.	Ht.	Dia.	Ht.	For Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.
Steel



		3/4"-10	1 15/64"	5/8"	31/32"	0.06"	63/64"	ASME B1.1	5	000000000	000000

High-Profile Hex Nuts

Slightly taller than standard-profile hex nuts, these have a larger gripping area so your wrench or socket won't slip off as you tighten them. They're often used in vehicles and machinery where fasteners can be difficult to reach.

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.

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

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



	3/4"-10	1 1/16"	1"	SAE Grade 8	SAE J995	1	000000000	000000

Left-Hand to Right-Hand Female Hex Thread Adapters

Often called sleeve nuts, these thread adapters fasten parts with right-hand threads to parts with left-hand threads.

Zinc-Plated Steel—Zinc-plated steel adapters are strong and corrosion resistant.

18-8 Stainless Steel—18-8 stainless steel adapters have good corrosion resistance.

			Thread Lg.		Thread Fit		Hex				Each
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	Size	Length	Hardness		1-9	10-Up
Black-Oxide Steel



		3/4"-10	3/4"-10	1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B80	000000000	000000	000000


		Zinc-Plated Steel



				3/4"-10	3/4"-10	2 1/4"	2 1/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B65	000000000	00000	00000


				18-8 Stainless Steel



						3/4"-10	3/4"-10	1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B80	000000000	00000	00000


						316 Stainless Steel



								3/4"-10	3/4"-10	1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B80	000000000	00000	00000

Left-Hand to Right-Hand Male Thread Adapters

Made from black-oxide steel, these adapters resist corrosion in dry environments. Thread length is the same on both ends.

	Hardness		Each
Black-Oxide Steel







	3/4"-10 Threads

	4"	1 3/4"	70,000	Rockwell B67	000000000	00000


	5"	1 3/4"	70,000	Rockwell B67	000000000	0000
	6"	1 3/4"	70,000	Rockwell B67	000000000	0000
	8"	2"	70,000	Rockwell B67	000000000	0000

Reinforced Threaded-Hole Bumpers

Style 1

With a metal base plate for added strength, these bumpers withstand repeated impacts for a longer service life than all-rubber bumpers. You can also use them as spacers and noise reducers. Twist them onto a threaded stud on your equipment, or pair them with your own stud to create a custom-length bumper.

Multipurpose Neoprene About Multipurpose Neoprene

Style 1

A good choice for oily equipment that's exposed to sunlight, rain, and ozone. These aren't as oil resistant as Buna-N bumpers, but they can be used outdoors.

Hardness Rating—The harder the bumper, the better it withstands impact and abrasion over time. The softer the bumper, the more cushioning it provides for objects made of glass, soft metal, and other fragile materials. Bumpers with a medium rating offer a balance of impact resistance and cushioning.

	Thread
	Size	Dp.	OD	Ht.	Hardness	Hardness Rating	Color	Temp., ° F	Base Plate Material	Nonmarking	For Use Outdoors		Each
Style 1



		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 40A	Medium Soft	Black	-40 to 200	Steel	No	Yes	0000000	000000


		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 75A	Hard	Black	-40 to 200	Steel	No	Yes	00000000	00000

Abrasion-Resistant Polyurethane Rubber About Abrasion-Resistant Polyurethane Rubber

Style 1

Our toughest rubber bumpers, they keep their shape even when knocked and scraped by metal and other abrasive materials. They're often used on industrial vehicles, conveyors, and heavy construction equipment.

	Thread
	Size	Dp.	OD	Ht.	Hardness	Hardness Rating	Color	Temp., ° F	Base Plate Material	Nonmarking	For Use Outdoors		Each
Style 1



		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 40A	Medium Soft	Red	-40 to 200	Steel	No	Yes	0000000	000000


		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 50A	Medium	Red	-40 to 200	Steel	No	Yes	00000000	00000
		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 60A	Medium Hard	Black	-40 to 200	Steel	No	Yes	00000000	00000
		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 85A	Hard	Red	-40 to 200	Steel	No	Yes	0000000	00000
		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 95A	Extra Hard	Black	-40 to 200	Steel	No	Yes	00000000	00000

Oil-Resistant Buna-N About Oil-Resistant Buna-N

Style 1

These bumpers resist oil and fuels better than other rubber bumpers. Use them on frequently lubricated machinery and oily equipment, such as engines and pumps.

	Thread
	Size	Dp.	OD	Ht.	Hardness	Hardness Rating	Color	Temp., ° F	Base Plate Material	Nonmarking	For Use Outdoors		Each
Style 1



		3/4"-10	1"	2 1/4"	2 1/4"	Durometer 40A	Medium Soft	White	-60 to 175	Steel	Yes	No	00000000	000000

Coupling Nuts with Sight Hole

Confirm that threads are fastened to the right depth at a glance. If you see threads through the sight hole, you'll know that they are properly engaged to ensure a strong hold. Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Low-Strength Steel

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

								Each
	Thread Size	Lg.	Wd.	Fastener Strength Grade/Class	Threading	Sight Hole Dia.		1-9	10-Up
Zinc-Plated Steel



		3/4"-10	2 1/4"	1 1/8"	SAE Grade 2	Fully Threaded	3/16"	000000000	00000	00000

Left-Hand-Thread Coupling Nuts

Pair with left-hand threaded rods, and turn to the left to tighten. Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Low-Strength Steel

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

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-Up
Zinc-Plated Steel



		3/4"-10	2 1/4"	1"	Fully Threaded	000000000	000000	000000

Threaded Shaft Adapters


For Keyed Shafts	For Round Shafts

Adapt your shaft to a threaded end without having to machine threads onto your shaft. These adapters have a threaded end that mounts into tapped holes or can be used for threaded accessories, such as mixer propellers or fan blades. To attach these adapters to your existing shaft, tighten the clamping screws for a firm, even grip that won’t damage shafts. Made of steel, these adapters balance high strength and good machinability, making them ideal for general purpose use. They have a black-oxide finish that resists rust but should be used in primarily dry environments.

		Thread
	For Shaft Dia.	Size	Lg.	Overall Lg.	Bore Dp.	OD	Max. Rotation Speed	Max. Torque		Each
Black-Oxide Steel







				For Keyed Shafts

				3/4"	3/4"-10	1 1/2"	4 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	0000000	0000000




						For Round Shafts

						3/4"	3/4"-10	1 1/2"	4 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	0000000	000000