1 3⁄8 Inch Sockets | McMaster-Carr

						Standard Clearance			Deep Clearance
	Drive Size	OD	Specs. Met	Socket Shape	For Drive Style	Overall Lg.		Each	Overall Lg.		Each
1/2" Square Drive



		1 3/8"	1 7/8"	ASME B107.110	6-Point	External Hex	2"	5545A272	000000	—	———	0


		1 3/8"	1 7/8"	ASME B107.110, SAE AS954	6-Point	External Hex	—	———	0	3 1/2"	5545A297	000000


		3/4" Square Drive



				1 3/8"	1 29/32"	ASME B107.110	6-Point	External Hex	—	———	0	3 1/2"	5547A64	00000

6-Point Impact Sockets

Achieve the best possible grip on hex fasteners and prevent rounding. These sockets are made to withstand the high torque and force of impact tools.

Standard 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



		1 3/8"	7/8"	1 3/8"	—	Black-Oxide Steel	2"	6-Point	5549A38	000000	———	0


		3/4" Square Drive



				1 3/8"	7/8"	1 9/32"	1 7/16"	Black-Oxide Steel	2 1/4"	6-Point	5552A75	00000	5552A36	00000


				1" Square Drive



						1 3/8"	25/32"	1 1/2"	2"	Black-Oxide Steel	2 11/16"	6-Point	5550A188	00000	5550A611	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 3/8"	29/32"	2 7/8"	—	Black-Oxide Steel	3 1/2"	6-Point	5549A147	000000	———	0


		3/4" Square Drive



				1 3/8"	7/8"	2 9/32"	1 7/16"	Black-Oxide Steel	3 1/4"	6-Point	5552A94	00000	5552A36	00000


				1" Square Drive



						1 3/8"	29/32"	2 53/64"	2"	Black-Oxide Steel	3 3/4"	6-Point	5550A119	00000	5550A611	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	Deep Clearance	12-Point Socket

					Standard Clearance			Deep Clearance
	Drive Size	OD	Socket Shape	For Drive Style	Overall Lg.		Each	Overall Lg.		Each
1/2" Square Drive



		1 3/8"	1 25/32"	12-Point	External 12-Point, External Hex	2"	5545A92	000000	—	———	0


		1 3/8"	1 7/8"	12-Point	External 12-Point, External Hex	—	———	0	3 1/2"	5545A823	000000


		3/4" Square Drive



				1 3/8"	1 29/32"	12-Point	External 12-Point, External Hex	2 1/4"	5547A21	00000	—	———	0


				1" Square Drive



						1 3/8"	1 61/64"	12-Point	External 12-Point, External Hex	2 7/16"	5546A14	00000	—	———	0

6-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish. The hex shape grips hex fasteners and prevents rounding.

Sockets—Chrome-Plated Steel


	6-Point Socket

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



	19	19 Sockets	Standard: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4" Standard (cont.): 1 5/16", 1 3/8", 1 7/16", 1 1/2"	Metal Clip Rail	6-Point	3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 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"	7936N105	0000000


	19	19 Sockets	Deep: 3/8", 7/16", 1/2", 9/16", 5/8"; 11/16"; 3/4"; 13/16"; 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16" Deep (cont.): 1 3/8", 1 7/16", 1 1/2"	Metal Clip Rail	6-Point	5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 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"	7936N106	000000


	3/4" Square Drive



			11	11 Sockets	Deep: 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"	Metal Clip Rail	6-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"	7220A21	000000

Socket Organizers

		Each
Foam Socket Organizer for 24 Piece 3/8" Square Drive Size Set	5243A19	000000

12-Point Socket Sets

Made in the U.S.A., 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
1/2" Square Drive



	19	19 Sockets	Deep: 3/8", 7/16", 1/2", 9/16", 5/8"; 11/16"; 3/4"; 13/16"; 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16" Deep (cont.): 1 3/8", 1 7/16", 1 1/2"	Metal Clip Rail	12-Point	3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 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"	7874N103	0000000


	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	00000000

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

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
1/2" Square Drive



		1 3/8"	13/16"	1 3/32"	—	Black-Oxide Steel	2 1/8"	12-Point	5549A954	000000	———	0


		3/4" Square Drive



				1 3/8"	1 1/8"	1 1/8"	1 5/8"	Black-Oxide Steel	2 1/4"	12-Point	5552A145	00000	5552A38	00000

Deep Clearance


		12-Point Socket

		Clearance Dp.
	Drive Size	Nut	Bolt	Material	Overall Lg.	Socket Shape		Each
1/2" Square Drive



		1 3/8"	1 7/64"	2 7/8"	Black-Oxide Steel	3 1/2"	12-Point	5549A175	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







	3/8" Square Drive

	1 3/8"	3"	1 13/16"	0.781"-32	ANSI/ABMA 8.2	1 3/8"	2 1/16"	Steel	5510N119	0000000

6-Point Impact Socket Sets

6-Point

Socket

The hex shape grips hex fasteners and prevents rounding. These sockets are made to withstand the high torque and force of impact tools.

	Components Included	Includes	Container Type	Socket Shape		Each
3/4" Square Drive—Black-Oxide Steel



	13	12 Sockets 1 Extension	Standard: 3/4", 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" 7" Long Extension	Metal Clip Rail	6-Point	7405A83	0000000

Impact Hex Bit Socket Sets


Plastic Case	For Hex Drives

Use these sockets as an alternative to a screwdriver or L-key. They are made to withstand the high torque and force of impact tools.

	Sockets Included	Material	Container Type	For Drive Style		Each
1" Square Drive



	6	3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8", (4" O'all Lg.)	Black-Oxide Steel	Plastic Case	Hex	6040A32	0000000

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

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

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
3/8" Square Drive



	1 3/8"	2 3/8"	3/8"	1 5/16"	Chrome-Plated Steel	Round	5844A23	000000


	1/2" Square Drive



			1 3/8"	3 3/16"	7/16"	2"	Chrome-Plated Steel	Round	5831A22	00000

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

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 3/8"	3 15/16"	1 3/4"	Black Oil-Coated Steel	No	Hex	54615A46	000000	5550A68	00000


		1 1/2" Square Drive



				1 3/8"	4 3/4"	2 7/8"	Black Oil-Coated Steel	No	Hex	54615A74	000000	7196A75	0000

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 3/8"	2 5/8"	31/32"	1 5/16"	Chrome-Plated Steel	12-Point Sure Grip	5832A14	000000