41 mm Wrenches | McMaster-Carr

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.

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, mm	Overall Lg.	Head Offset Angle	Head Thick.	Opening Angle	Head Thick.	Appearance	Specs. Met		Each
12-Point Opening







				Chrome-Plated Steel

				41	23"	15°	15/16"	15°	3/4"	Dull	ASME B107.100	7191A93	0000000

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

	41	13"	15°	1/2"	—	ASME B107.100	5742A22	0000000




			Chrome-Plated Steel

			41	8"	30°	9/32"	Dull	ASME B107.100	5746A12	00000

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 Phosphate-Coated Steel—The dark coating on these wrenches forms a rust-resistant barrier, making them good for wet areas. However, they won't hold up to salt water and chemicals. The coating is textured for a firm grip, even when your hands are greasy.

	Head Thk.	Specs. Met		Each
Round Opening







	Black Phosphate-Coated Steel

	41	13 1/4"	15°	35/64"	DIN 894	5488A34	000000

High-Leverage Box Wrenches

The long handle provides 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.	Overall Lg. with Extension Handle	Head Thk.	Material		Each		Each
12-Point Opening



		1 5/8", 41 mm	13 3/4"	32 3/4"	15/16"	Black-Oxide Steel	54555A55	0000000	54555A81	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



	41	3 1/2"	3/8"	2 1/16"	Chrome-Plated Steel	Round	1882N57	000000

Ratcheting Combination Wrenches

12-Point

Opening

Turn nuts and bolts without having to remove and reposition these wrenches. They're commonly used where you don't have enough space for full turns. To switch between loosening and tightening, flip them over.

Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.

			Box End		Open End
	Drive Size, mm	Overall Lg.	Head Thick.	Number of Teeth	Opening Angle	Head Thick.	Appearance	Specs. Met		Each
12-Point Opening







				Chrome-Plated Steel

				41	23"	55/64"	72	15°	23/32"	Polished	ASME B107.100	5163A65	000000

Double Open-End Wrenches

Round

Opening

Switch between two different-sized fasteners without swapping out your wrenches. The two heads save you time, while reducing the number of tools you need to keep on hand. Drop forged for added strength, these wrenches 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.

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

	Head Thickness	Appearance		Each
Round Opening







	Chrome-Plated Steel

	41 mm × 46 mm	16 3/4"	15°	15/32"	Dull	5420A43	0000000

Striking Box Wrenches

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		Each
12-Point Opening



	1 5/8", 41 mm	7 7/8"	1 5/32"	Black-Oxide Steel	5456A15	000000

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

	41	9 1/4"	15°	47/64"	DIN 133	6973A21	000000

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



	41 mm	12"	45°	1 1/16"	Black-Oxide Steel	ASME B107.100	5455A73	000000

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, mm	Nut	Bolt	Compatible Retaining Ring ID	Material	Overall Lg.	Socket Shape		Each		Each
1/2" Square Drive



		41	1 21/64"	1 17/32"	—	Black-Oxide Steel	2 1/4"	6-Point	7205A99	000000	———	0


		3/4" Square Drive



				41	1 1/16"	1 31/64"	1 5/8"	Black-Oxide Steel	2 5/8"	6-Point	54175A86	00000	5552A38	00000


				1" Square Drive



						41	63/64"	1 1/2"	2 1/8"	Black-Oxide Steel	2 11/16"	6-Point	54155A81	00000	5550A62	0000

Deep Clearance


		6-Point Socket

	Sockets									Retaining Rings
		Clearance Dp.
	Drive Size, mm	Nut	Bolt	Compatible Retaining Ring ID	Material	Overall Lg.	Socket Shape		Each		Each
3/4" Square Drive



		41	1 1/16"	2 29/64"	1 5/8"	Black-Oxide Steel	3 1/2"	6-Point	54175A15	000000	5552A38	00000


		1" Square Drive



				41	63/64"	2 3/4"	2 1/8"	Black-Oxide Steel	4"	6-Point	54155A62	00000	5550A62	0000

6-Point Sockets

The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points. For use with hand-drive tools only.

Chrome-Plated Steel


Deep Clearance	6-Point Socket

						Deep Clearance
	Drive Size, mm	OD	Specs. Met	Socket Shape	For Drive Style	Overall Lg.		Each
3/4" Square Drive



		41	2 13/64"	ASME B107.110	6-Point	External Hex	3 1/2"	5547A716	000000

Budd Wheel Impact Socket Sets

4-Point

Socket

6-Point

Socket

Retaining Rings

Remove and install dual wheels on trucks and trailers with the sockets in these sets. The sockets are extra deep for use with Budd wheels, so you can remove both the nut and the stud with a single socket. Sets include sockets for hex drives to access lug nuts and sockets for square drives to turn the threaded shafts on inner wheels. All are impact sockets, made to withstand the high torque and force of impact tools. Use them 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
	No. of Pieces	Includes	Color	Overall Lg.	Container Type	Socket Shape		Each		Each
1" Square Drive—Phosphate-Coated Steel



		5	Square Sockets: 17 mm, 20 mm, 21 mm, 13/16" Hex Sockets: 35 mm, 38 mm, 41 mm, 33 mm, 1 1/2"	Black	5 5/8"	Plastic Case	4-Point, 6-Point	90479A110	0000000	5550A611	00000

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, mm		Each
3/4" Square Drive



	13	13 Sockets	Standard: 19 mm, 20 mm, 22 mm, 24 mm, 27 mm, 30 mm, 32 mm, 36 mm, 41 mm, 46 mm, 50 mm, 55 mm, 60 mm	Metal Clip Rail	12-Point	19, 20, 22, 24, 27, 30, 32, 36, 41, 46, 50, 55, 60	8362A11	0000000

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, mm		Each
3/4" Square Drive



	30	24 Sockets 2 Drive Tools 3 Extensions Universal Joint	Standard: 19 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 35 mm; 36 mm, 38 mm, 41 mm Standard (cont.): 42 mm, 46 mm, 50 mm, 54 mm, 55 mm, 58 mm, 60 mm 17 1/2" Long Sliding-Head Wrench Handle 24" Long Ratchet Wrench 3 1/2" Long Extension 8" Long Extension, 16" Long Extension	Metal Case	12-Point	19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 35, 36, 38, 41, 42, 46, 50, 54, 55, 58, 60	7874N112	000000000

Socket Organizers

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

L-Keys

The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.

		Length					Each		Package
	Drive Size, mm	Overall	Relative	Long Leg	Short Leg	Finish		Each	Pkg. Qty.		Pkg.
Alloy Steel







				Hex

				41	17 3/16"	Short	15 1/2"	5 1/2"	Black Oxide	7289A71	0000000	2	7289A711	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, mm	OD	Socket Shape	For Drive Style	Overall Lg.		Each
3/4" Square Drive



		41	2 7/32"	12-Point	External 12-Point, External Hex	2 9/16"	7312A38	000000

Economy 6-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported. The hex shape grips hex fasteners and prevents rounding.

Sockets—Chrome-Plated Steel


Metal Clip Rail	6-Point Socket

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



	15	15 Sockets	Deep: 19 mm, 22 mm, 23 mm, 24 mm, 27 mm, 30 mm, 32 mm, 35 mm, 36 mm, 38 mm, 41 mm, 46 mm, 50 mm, 55 mm, 60 mm	Metal Clip Rail	6-Point	19, 22, 23, 24, 27, 30, 32, 35, 36, 38, 41, 46, 50, 55, 60	5894A209	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, mm	Overall Lg.	Compatible Retaining Ring ID	Material	Bit Replaceable	For Drive Style		Each		Each
1" Square Drive



		41	3 15/16"	1 3/4"	Black Oil-Coated Steel	No	Hex	54615A62	0000000	5550A68	00000


		1 1/2" Square Drive



				41	4 3/4"	2 7/8"	Black Oil-Coated Steel	No	Hex	54615A92	000000	7196A75	0000

Budd Wheel Impact Sockets

Remove and install dual wheels on trucks and trailers—these sockets have a hex recess for accessing lug nuts and a square recess to turn the threaded shafts found on inner wheels. They are made to withstand the high torque and force of impact tools.

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.

Zinc-Phosphate-Coated Steel

	Sockets									Retaining Rings
							Deep Clearance
	Drive Size, mm	Square Recess Size, mm	Compatible Retaining Ring ID	OD	Socket Shape	For Drive Style	Overall Lg.		Each		Each
1" Square Drive



		41	21	2"	2 45/64"	6-Point	External Hex	3 15/16"	90478A130	000000	5550A611	00000

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.

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.

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



	12	12 Sockets	Standard: 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 27 mm, 30 mm, 32 mm, 36 mm, 41 mm, 46 mm	Metal Clip Rail	6-Point	54175A21	0000000


	14	14 Sockets	Deep: 19 mm, 21 mm, 22 mm, 23 mm, 24 mm, 26 mm, 27 mm, 30 mm, 32 mm, 33 mm, 35 mm, 36 mm, 38 mm, 41 mm	—	6-Point	53105A107	000000