1 3/4 Inch Sockets | McMaster-Carr

3/4" Square Drive and 1" Square Drive—_3/4", 1", and 1 _1/2" square drive size sockets require a locking retainer. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.

	Sockets									Retaining Rings
		Clearance Dp.
	Drive Size	Nut	Bolt	Compatible Retaining Ring ID	Material	Overall Lg.	Socket Shape		Each		Each
1/2" Square Drive



		1 3/4"	1 1/16"	1 11/16"	—	Black-Oxide Steel	2 3/8"	6-Point	5549A303	000000	———	0


		3/4" Square Drive



				1 3/4"	1 1/8"	1 11/16"	1 5/8"	Black-Oxide Steel	2 5/8"	6-Point	5552A41	00000	5552A38	00000


				1" Square Drive



						1 3/4"	1 3/32"	1 1/2"	2 1/4"	Black-Oxide Steel	2 11/16"	6-Point	5550A191	00000	5550A138	0000

Deep Clearance


		6-Point Socket

	Sockets									Retaining Rings
		Clearance Dp.
	Drive Size	Nut	Bolt	Compatible Retaining Ring ID	Material	Overall Lg.	Socket Shape		Each		Each
1/2" Square Drive



		1 3/4"	2 9/32"	3 1/32"	—	Black-Oxide Steel	3 11/16"	6-Point	5549A112	000000	———	0


		3/4" Square Drive



				1 3/4"	2 1/4"	2 5/8"	1 5/8"	Black-Oxide Steel	3 7/8"	6-Point	5552A24	00000	5552A38	00000


				1" Square Drive



						1 3/4"	1 7/32"	1 11/16"	2 1/8"	Black-Oxide Steel	4 1/4"	6-Point	5550A125	00000	5550A62	0000

12-Point Sockets

The 12-point shape quickly positions on hex fasteners. These sockets are for hand-driven use only.

Chrome-Plated Steel


Standard Clearance	12-Point Socket

					Standard Clearance
	Drive Size	OD	Socket Shape	For Drive Style	Overall Lg.		Each
3/4" Square Drive



		1 3/4"	2 25/64"	12-Point	External 12-Point, External Hex	2 11/16"	5547A26	000000


		1" Square Drive



				1 3/4"	2 33/64"	12-Point	External 12-Point, External Hex	2 13/16"	5546A29	00000

Spanner Sockets


Socket Shown With Wrench (Sold Separately)

4-Pin

For easy tightening and loosening, these sockets have pins that grip the slotted sides on bearing nuts. These sockets require less clearance around bearings than standard hook spanner wrenches, so they’re good in tight spaces. Use them with a square-drive wrench handle or a ratchet wrench; they’re not for use with impact wrenches.

	For Nut Thread Size	For Bearing Nut Specs. Met	For Nut Dia.	Bolt Clearance Dp.	Material		Each
4-Pin Socket







	1/2" Square Drive

	1 3/4"	3 1/2"	2 3/8"	1.173"-18	ANSI/ABMA 8.2	1 3/4"	2 1/4"	Steel	5510N122	0000000

12-Point Socket Sets

These tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish. The 12-point shape quickly positions on hex fasteners.

Sockets—Chrome-Plated Steel


	12-Point Socket

	Components Included	Includes	Container Type	Socket Shape	Drive Size		Each
1" Square Drive



	17	17 Sockets	Standard: 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2", 2 1/8" Standard (cont.): 2 3/16", 2 1/4", 2 3/8"	Metal Clip Rail	12-Point	1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2", 2 1/8", 2 3/16", 2 1/4", 2 3/8"	7874N111	000000000

Socket Organizers

		Each
Foam Socket Organizer for 22 Piece 3/4" Square Drive Size Set	5243A22	0000000

Sockets with Drive Tools—Chrome-Plated Steel


	12-Point Socket

	Components Included	Includes	Container Type	Socket Shape	Drive Size		Each
3/4" Square Drive



	22	16 Sockets 1 Adapter 2 Drive Tools 3 Extensions	Standard: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8 20 1/8" Long Ratchet Wrench 22 1/8" Long Flex-Head Wrench Handle 3" Long Extension 8" Long Extension 16" Long Extension 4 1/16" Square Drive Adapter	Metal Case	12-Point	7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2"	7220A34	000000000


	29	22 Sockets 1 Adapter 3 Drive Tools 3 Extensions	Standard: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8" Standard (cont.): 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2", 2 1/8", 2 3/16", 2 1/4", 2 3/8" 19" Long Sliding-Head Wrench Handle 20 1/8" Long Ratchet Wrench 22 1/8" Long Flex-Head Wrench Handle 3" Long Extension 8" Long Extension 16" Long Extension 4 1/16" Long Flex Adapter	Metal Case	12-Point	7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2", 2 1/8", 2 3/16", 2 1/4", 2 3/8"	7219A28	00000000

Socket Organizers

		Each
Foam Socket Organizer for 22 Piece 3/4" Square Drive Size Set	5243A22	0000000

Nonsparking 6-Point Sockets

6-Point

Socket

Made of aluminum bronze, these sockets satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present. The hex shape provides the best possible grip on hex fasteners and prevents rounding.

Warning: Do not use these tools in direct contact with acetylene.

Aluminum Bronze

	Sockets							Ratchet Wrenches
					Standard Clearance
	Drive Size	OD	Socket Shape	For Drive Style	Overall Lg.		Each		Each
3/4" Square Drive



		1 3/4"	2 1/2"	6-Point	External Hex	2 9/16"	6490A18	0000000	6490A31	0000000

Economy 12-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported. The 12-point shape quickly positions on hex fasteners.

Sockets—Chrome-Plated Steel


	12-Point Socket

	Components Included	Includes	Container Type	Socket Shape	Drive Size		Each
3/4" Square Drive



	16	16 Sockets	Standard: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16" Standard (cont.): 1 7/8", 2"	Metal Clip Rail	12-Point	7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2"	7957N111	0000000

Sockets with Drive Tools—Chrome-Plated Steel


	12-Point Socket

These sets include ratchet wrenches, extensions, and adapters alongside standard and deep sockets, so you have everything needed to reach fasteners in tight or recessed spaces.

	Components Included	Includes	Container Type	Socket Shape	Drive Size		Each
3/4" Square Drive



	14	10 Sockets 2 Drive Tools 2 Extensions	Standard: 7/8", 15/16", 1", 1 1/8", 1 1/4", 1 7/16", 1 1/2", 1 5/8", 1 3/4", 2" 19" Long Flex-Head Wrench Handle 20" Long Ratchet Wrench 4" Long Extension 8" Long Extension	Plastic Case	12-Point	7/8", 15/16", 1", 1 1/8", 1 1/4", 1 7/16", 1 1/2", 1 5/8", 1 3/4", 2"	7957N104	0000000

Impact Hex Bit Sockets


	For Hex Drives

These sockets are made to withstand the high torque and force of impact tools.

Compatible Retaining Ring ID—Sockets that list a compatible retaining ring ID require a locking retainer. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.

	Bit Sockets								Retaining Rings
	Drive Size	Overall Lg.	Compatible Retaining Ring ID	Material	Bit Replaceable	For Drive Style		Each		Each
1" Square Drive



		1 3/4"	3 15/16"	1 3/4"	Black Oil-Coated Steel	No	Hex	54615A49	0000000	5550A68	00000


		1 1/2" Square Drive



				1 3/4"	4 3/4"	2 7/8"	Black Oil-Coated Steel	No	Hex	54615A77	000000	7196A75	0000

Sure Grip Wrench Head Sets


Wrench and Socket Extension Not Included

Grip more of your fastener head with these wrench heads. They have a hex or 12-point opening with more surface area than rounded wrench heads, so they make more contact with fasteners for a better hold. Also known as flare-nut crowfoot wrenches or line wrenches, they're often used with flared tube fittings as well as fuel and hydraulic lines. Connect them to a socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench.

	Includes	Material	Wrench Opening Shape	Container Type		Each
1/2" Square Drive



	8	Wrench Heads: 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 1/2", 1 5/8", 1 3/4", 2"	Chrome-Plated Steel	12-Point Sure Grip	Plastic Clip Rail	5832A31	0000000

Wrench Head Sets


Wrench and Socket Extension Not Included	Wrench Head Set

Reach nuts obstructed by a fluid line or other barrier with the wrench heads in these sets. Connect them to a socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.

	Includes	Material	Wrench Opening Shape		Each
1/2" Square Drive



	15	Wrench Heads: 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2"	Chrome-Plated Steel	Round	5831A121	0000000

6-Point Impact Sockets with Spline Drive

Attach these sockets to your spline-drive impact wrench. These tools are typically used where high torque is required, such as heavy equipment in the aerospace and automotive industries. The hex shape of the fastening end of these sockets achieves the best possible grip on hex fasteners to prevent rounding their points. These sockets are sturdier and have more give than manual-drive sockets, so they'll withstand the high torque and force of impact tools.

Black-Oxide Steel

Spline

Drive

		Clearance Dp.					Standard Clearance
	Drive Size	Nut	Bolt	OD	Socket Shape	For Drive Style	Overall Lg.		Each
No. 5 Spline Drive



		1 3/4"	1 21/32"	2 5/32"	2 7/8"	6-Point	External Hex	3 1/16"	7932N109	000000

Wrench Heads


Wrench and Socket Extension Not Included

Reach nuts obstructed by a fluid line or other barrier with these wrench heads. Connect them to your socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.

	Overall Lg.	Thk.	Ctr.-to-Ctr. Lg.	Material	Wrench Opening Shape		Each
1/2" Square Drive



	1 3/4"	3 5/8"	17/32"	2 3/16"	Chrome-Plated Steel	Round	5831A21	000000

Sure Grip Wrench Heads


Wrench and Socket Extension Not Included	12-Point Sure-Grip Opening

Grip more of your fastener head with these wrench heads. They have a hex or 12-point opening with more surface area than rounded wrench heads, so they make more contact with fasteners for a better hold. Also known as flare-nut crowfoot wrenches or line wrenches, they're often used with flared tube fittings as well as fuel and hydraulic lines. Connect them to your socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench.

12-Point Sure-Grip Opening—Wrenches with a 12-point sure-grip opening quickly position on hex fasteners.

	Overall Lg.	Thk.	Ctr.-to-Ctr. Lg.	Material	Wrench Opening Shape		Each
1/2" Square Drive



	1 3/4"	3 1/8"	1 1/32"	1 9/16"	Chrome-Plated Steel	12-Point Sure Grip	5832A19	000000

Steel Socket Head Screws

Fully Threaded

Partially Threaded

Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.

Length is measured from under the head.

Black-Oxide Alloy Steel—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.

		Head
	Lg.	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				2 1/4"-4 1/2

				4"	3 3/8"	2 1/4"	Fully Threaded	Coarse	170,000	1	90044A224	0000000


				6"	3 3/8"	2 1/4"	Partially Threaded	Coarse	170,000	1	90044A225	000000
				8"	3 3/8"	2 1/4"	Partially Threaded	Coarse	170,000	1	90044A226	000000
				10"	3 3/8"	2 1/4"	Partially Threaded	Coarse	170,000	1	90044A227	000000




						2 1/4"-8

						6"	3 3/8"	2 1/4"	Partially Threaded	Coarse	170,000	1	90044A228	000000


						8"	3 3/8"	2 1/4"	Partially Threaded	Coarse	170,000	1	90044A229	000000
						10"	3 3/8"	2 1/4"	Partially Threaded	Coarse	170,000	1	90044A230	000000




								2 1/2"-4

								4"	3 3/4"	2 1/2"	Fully Threaded	Coarse	170,000	1	90044A231	000000


								6"	3 3/4"	2 1/2"	Fully Threaded	Coarse	170,000	1	90044A232	000000
								8"	3 3/4"	2 1/2"	Partially Threaded	Coarse	170,000	1	90044A233	000000
								10"	3 3/4"	2 1/2"	Partially Threaded	Coarse	170,000	1	90044A234	000000




										2 1/2"-8

										4"	3 3/4"	2 1/2"	Fully Threaded	Fine	170,000	1	90044A235	000000


										6"	3 3/4"	2 1/2"	Fully Threaded	Fine	170,000	1	90044A236	000000
										8"	3 3/4"	2 1/2"	Partially Threaded	Fine	170,000	1	90044A237	000000
										10"	3 3/4"	2 1/2"	Partially Threaded	Fine	170,000	1	90044A238	000000