16 mm Crowfeet | McMaster-Carr

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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Turn Required to Ratchet

60°

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1/4"

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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7 Products

Wrench Head Sets

Wrench and

Socket

Extension Not

Included

Wrench Head Set with Metal Clip

Rail

Wrench Head Set with

Plastic Clip Rail

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	Container Type		Each
3/8" Square Drive



	10	Wrench Heads: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	Chrome-Plated Steel	Round	Metal Clip Rail	5311A45	0000000


	30	Wrench Heads (Inch): 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" Wrench Heads (Metric): 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm	Nickel-Plated Steel	Round	Plastic Clip Rail	5844A123	000000

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
3/8" Square Drive



	18	Wrench Heads: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 27 mm	Nickel-Plated Steel	Hex Sure Grip	Plastic Clip Rail	5311A111	0000000

Ratcheting Wrench Head Sets


Wrench and Socket Extension Not Included

Connect one of the heads in these sets to a socket extension to reach an obstructed fastener, then turn the fastener without removing and repositioning the wrench head. These also work well where clearance is limited from both the top and side. Alternatively, attach a head directly to a wrench handle to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.

	Includes	Turn Req. to Ratchet	Material	Wrench Opening Shape	Container Type		Each
3/8" Square Drive



	10	Wrench Heads: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	60°	Chrome-Plated Steel	Hex	Plastic Case	93312A120	0000000

Open-End 6-Point Socket Sets

The sockets in these sets have a cutout and extra length so you can reach and twist nuts without having to disconnect your line. Connect them to a ratchet wrench to turn nuts around a wired sensor, fuel line, or hose without having to remove and reposition your wrench. The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points. For use with hand-drive tools only.

Sockets—Chrome-Plated Steel

	Components Included	Includes	Container Type	Socket Shape	Drive Size, mm		Each
3/8" Square Drive



	10	10 Sockets	Deep: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	Foam Tray	6-Point	10, 11, 12, 13, 14, 15, 16, 17, 18, 19	7983N101	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



	16	1 5/8"	1/4"	7/8"	Chrome-Plated Steel	Round	5311A37	000000

Open-End 6-Point Sockets

Slide the open side of these sockets over a tube or hose to adjust a nut that’s already installed. You can turn them with ratchets, so they’re easier to use than open-end wrench heads—no need to pull the socket off the nut and reposition. The hex shape provides the best possible grip on hex fasteners and prevents rounding. Only use with hand-driven tools.

Chrome-Plated Steel

						Deep Clearance
	Drive Size, mm	OD	Opening Lg.	Socket Shape	For Drive Style	Overall Lg.		Each
3/8" Square Drive



		16	15/16"	1 7/16"	6-Point	External Hex	2 13/16"	93299A170	000000