2 1/4 Inch Sockets | McMaster-Carr

3/4" Square Drive, 1" Square Drive, and 1 1/2" 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



		2 1/4"	1 3/8"	2 3/32"	—	Black-Oxide Steel	2 13/16"	6-Point	5549A31	000000	———	0


		3/4" Square Drive



				2 1/4"	1 1/2"	2 5/16"	1 5/8"	Black-Oxide Steel	3 1/4"	6-Point	5552A244	00000	5552A38	00000


				1" Square Drive



						2 1/4"	1 3/8"	2"	2 1/4"	Black-Oxide Steel	3 3/16"	6-Point	5550A208	00000	5550A138	0000


						1 1/2" Square Drive



								2 1/4"	1 13/32"	2 13/64"	2 7/8"	Black-Oxide Steel	3 7/8"	6-Point	7196A26	000000	7196A75	0000

Deep Clearance


		6-Point Socket

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



		2 1/4"	2 9/32"	3 1/32"	—	Black-Oxide Steel	3 11/16"	6-Point	5549A108	000000	———	0


		3/4" Square Drive



				2 1/4"	2 1/2"	3 19/64"	1 3/4"	Black-Oxide Steel	4 1/4"	6-Point	5552A17	00000	5552A181	00000


				1" Square Drive



						2 1/4"	1 11/32"	1 9/16"	2 1/8"	Black-Oxide Steel	4 3/4"	6-Point	5550A134	000000	5550A62	0000

Wheel Bearing Locknut Socket Sets

Shaped and sized for compatibility with wheel bearing locknuts on trucks and trailers, the sockets in these sets make it easy to install and remove locknuts. They ensure the proper torque setting when you reinstall a locknut on your wheel, so you know it's safe and secure. These are square drive sockets for use with hand-driven tools, not impact wrenches. Made of steel, they grip locknuts tightly and prevent rounding.

Sockets—Chrome-Plated Steel

Plastic Case

4-Pin

6-Pin

Spindle Puller Adapter—Spindle puller adapters remove the front spindle on four-wheel drive trucks so you can access the needle bearing when lubricating and aligning the front wheels.

Plastic Case—Carry sets with a plastic case from one location to the next.

4-Pin Socket and 6-Pin Socket—4-pin and 6-pin sockets fit around retaining locknuts with slots or holes in the side. Also known as spanner sockets, they’re similar to tri-groove sockets but have four or six pins instead of three.

	Components Included	Includes	Container Type	Socket Shape	Drive Size		Each
1/2" Square Drive



	6	1 Adapter 5 Sockets	4-Pin: 2", 2 1/4", 2 3/4" 6-Pin: 2 1/4" Spindle Puller Adapter	Plastic Case	4-Pin, 6-Pin	2", 2 1/4", 2 5/16", 2 3/4"	99939A120	0000000

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



		2 1/4"	3 1/32"	12-Point	External 12-Point, External Hex	3 1/16"	5547A34	000000


		1" Square Drive



				2 1/4"	3 5/64"	12-Point	External 12-Point, External Hex	3 5/16"	5546A24	000000

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

	2 1/4"	3 1/2"	2 7/8"	1.563"-18	ANSI/ABMA 8.2	2 1/4"	2 1/4"	Steel	5510N125	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	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"	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



	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	000000000

Socket Organizers

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

12-Point Impact Sockets

The 12-point shape quickly positions on hex fasteners. These sockets are made to withstand the high torque and force of impact tools.

Standard Clearance


		12-Point Socket

3/4" Square Drive—_3/4" 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
3/4" Square Drive



		2 1/4"	1 21/32"	1 21/32"	1 5/8"	Black-Oxide Steel	3 1/4"	12-Point	5552A112	000000	5552A38	00000

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



	2 1/4"	3 5/8"	37/64"	2 7/16"	Chrome-Plated Steel	Round	5831A46	000000