3 1/2" Hex Drivers | McMaster-Carr

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12 Products

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
1" Square Drive



		3 1/2"	4 35/64"	12-Point	External 12-Point, External Hex	4 1/2"	5546A33	0000000

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

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" Square Drive



		3 1/2"	2 13/64"	3 1/4"	2 1/2"	Black-Oxide Steel	4 5/16"	6-Point	5550A67	0000000	5550A613	00000


		1 1/2" Square Drive



				3 1/2"	2 1/4"	3"	3 3/8"	Black-Oxide Steel	5 1/8"	6-Point	7196A48	000000	7196A614	0000

Deep Clearance


		6-Point Socket

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" Square Drive



		3 1/2"	2 13/64"	4 29/64"	2 1/2"	Black-Oxide Steel	6"	6-Point	5550A763	0000000	5550A613	00000

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



	3 1/2"	4 7/16"	1"	Black-Oxide Steel	9586N116	0000000

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.

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







				Black-Oxide Steel

				3 1/2"	37"	15°	2 1/4"	15°	1 1/2"	Dull	7242A67	000000000

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



	3 1/2"	18"	45°	2 3/8"	Black-Oxide Steel	ASME B107.100	5455A62	0000000

Open-End Wrenches

Round

Opening

Adjust fasteners in tight spots such as motor housings, HVAC systems, and under sinks when you can't get a grip from the top. Slip around nuts and bolts from the side, unlike box wrenches that require more space to fit over fasteners. These wrenches are ASME or DIN 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.

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.

	Head Thk.	Specs. Met		Each
Round Opening







	Black-Oxide Steel

	3 1/2"	34"	15°	1 5/8"	ASME B107.100	5400A64	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



	3 1/2"	14 1/8"	1 23/32"	Black-Oxide Steel	ASME B107.100	8341A54	0000000


	12-Point Opening



			3 1/2"	14 1/4"	1 23/32"	Black-Oxide Steel	ASME B107.100	5456A35	000000