2 3/8" Hex Drivers | 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
3/4" Square Drive



		2 3/8"	1 1/2"	2 7/16"	1 5/8"	Black-Oxide Steel	3 3/8"	6-Point	5552A245	000000	5552A38	00000


		1" Square Drive



				2 3/8"	1 3/8"	2 3/32"	2 1/4"	Black-Oxide Steel	3 1/4"	6-Point	5550A209	000000	5550A138	0000


				1 1/2" Square Drive



						2 3/8"	1 1/2"	2 1/2"	3 3/8"	Black-Oxide Steel	4"	6-Point	7196A29	000000	7196A614	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
3/4" Square Drive



		2 3/8"	2 1/2"	3 19/64"	1 3/4"	Black-Oxide Steel	4 1/4"	6-Point	5552A47	000000	5552A181	00000


		1" Square Drive



				2 3/8"	1 3/8"	1 5/8"	2 1/8"	Black-Oxide Steel	5"	6-Point	5550A136	000000	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



		2 3/8"	3 1/32"	12-Point	External 12-Point, External Hex	3 1/16"	5547A43	000000


		1" Square Drive



				2 3/8"	3 1/4"	12-Point	External 12-Point, External Hex	3 5/16"	5546A25	000000

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 3/8"	1 3/4"	1 3/4"	1 5/8"	Black-Oxide Steel	3 3/8"	12-Point	5552A113	000000	5552A38	00000

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



	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

Backup Wrenches


	Head and Handle Sold Separately

When you’re working with high torque, these wrenches keep the nut from turning as you tighten a bolt. You'll need a head and a handle to form a complete wrench. The head goes around the nut you want to hold stationary and the handle braces against an adjacent nut, absorbing the torque. They're often used when sealing large pipe flanges with a hydraulic torque wrench. Safer than striking wrenches, they stay securely on the nut until you release them.

Heads

	Overall Lg.	Head Thk.	Material		Each
12-Point Opening



	2 3/8"	5 3/4"	1"	Black-Oxide Steel	9586N111	0000000

Deep-Offset Striking Box Wrenches

The head is offset 45° to provide clearance for reaching over obstructions. Also known as slugging wrenches, strike the handle with a hammer to break stuck fasteners free.

	Overall Lg.	Head Offset Angle	Head Thk.	Material	Specs. Met		Each
12-Point Opening



	2 3/8"	14"	45°	1 7/16"	Black-Oxide Steel	ASME B107.100	5455A25	0000000

Strikable Open-End Wrenches

Round

Opening

Don't wrestle with stuck fasteners. Strike the handle with a hammer to break them free. Designed to take the hits, these wrenches are drop forged for added strength and will be part of your toolbox for life. Also known as slugging wrenches.

Round Opening—The rounded edges spread force evenly to prevent stripping your fasteners. Use them on hex-head fasteners.

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

	Head Thk.	Specs. Met		Each
Round Opening







	Steel

	2 3/8"	12 3/4"	15°	31/32"	DIN 133	55555A53	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
1/2" Square Drive



	2 3/8"	4 11/16"	19/32"	2 1/2"	Chrome-Plated Steel	Round	5831A47	000000

Combination Wrenches

12-Point

Opening

Your go-to wrenches for routine maintenance. With two different ends, you need fewer tools to tighten and loosen nuts and bolts. The open end slides onto the side of fasteners for adjustments in tight spots. When nuts and bolts won't budge, the box end fully encircles them to apply maximum torque. Drop forged for added strength, these wrenches will be part of your toolbox for life.

12-Point Opening—The most common opening, these wrenches work on hex and 12-point nuts and bolts. They slide onto hex heads at more angles than 6-point fasteners for quicker engagement, but they're more likely to slip when you apply more torque.

Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.

Black-Oxide Steel—The dark, matte coating protects these wrenches from wear and won't flake off. They offer minimal corrosion resistance, though, so they're best for dry environments.

Dull—With a textured finish, these wrenches won't slip out of your hands, even when greasy or oily.

			Box End		Open End
	Drive Size	Overall Lg.	Head Offset Angle	Head Thick.	Opening Angle	Head Thick.	Appearance		Each
12-Point Opening







				Chrome-Plated Steel

				2 3/8"	31 1/2"	15°	1 5/16"	15°	31/32"	Dull	5441A55	0000000




						Black-Oxide Steel

						2 3/8"	28 3/4"	15°	1 9/32"	15°	31/32"	Dull	7242A48	000000

Deep-Offset High-Leverage Box Wrenches

A 45° offset head provides clearance for reaching over obstructions. These wrenches have a long handle for extra leverage—add an extension to increase it even more.

Extension Handles—Extension handles (sold separately) fit securely over the end of the wrench.

	Box Wrenches								Extension Handles
	Drive Size	Overall Lg.	Head Offset Angle	Overall Lg. with Extension Handle	Head Thk.	Material		Each		Each
12-Point Opening



		2 3/8", 60 mm	13 3/4"	45°	43 3/4"	1 13/32"	Black-Oxide Steel	54555A39	0000000	54555A82	0000000

Striking Box Wrenches

6-Point Opening

12-Point Opening

Also known as slugging wrenches, strike the handle with a hammer to break stuck fasteners free.

12-Point Opening—Wrenches with a 12-point opening are easier to position on hex fasteners than wrenches with a 6-point opening but make less contact.

	Overall Lg.	Head Thk.	Material	Specs. Met		Each
6-Point Opening



	2 3/8"	12 3/8"	1 7/16"	Black-Oxide Steel	ASME B107.100	8341A48	0000000


	12-Point Opening



			2 3/8"	12 3/8"	1 7/16"	Black-Oxide Steel	ASME B107.100	5456A25	000000

Tight-Clearance Open-End Wrenches

Round

Opening

Twist thin fasteners in cramped spots where other wrenches are too bulky. With a head and handle about half as thick as standard wrenches, it's easier to grip nuts found in electrical enclosures and small machinery. These wrenches are ASME certified—they handle more torque than run-of-the-mill alternatives and precisely fit fasteners so they don't round them off. Drop forged for added strength, they will be part of your toolbox for life. Also known as check nut or service wrenches.

Round Opening—The rounded edges spread force evenly to prevent stripping your fasteners. Use them on hex-head fasteners.

Black-Oxide Steel—The dark, matte coating protects these wrenches from wear and won't flake off. They offer minimal corrosion resistance, though, so they're best for dry environments.

Dull—With a textured finish, these wrenches won't slip out of your hands, even when greasy or oily.

	Head Thk.	Appearance	Specs. Met		Each
Round Opening







	Black-Oxide Steel

	2 3/8"	9 1/2"	30°	5/16"	—	ASME B107.100	5551A57	000000




			Chrome-Plated Steel

			2 3/8"	9 1/2"	30°	5/16"	Dull	ASME B107.100	5414A43	00000