Wire-Lock Pins | McMaster-Carr

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Retainer Shape

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Multiple Through Holes

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Retaining Ring Groove

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Loop with Easy-Release Tab

Finish

Zinc Flake Coated

Zinc Plated

Zinc Yellow-Chromate Plated

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Performance

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EAR99

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1008-1010 Low-Carbon Steel

1008-1018 Low-Carbon Steel

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For Pipe OD

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119 Products

Clevis Pins with Wire Retainer

Since you can quickly install and release the wire retainer, these pins cut down the time it takes to swap out parts. They are typically used to connect drive shafts to equipment such as gearboxes, pumps, and compressors. The retainer pivots to accommodate nearby components. Also known as power take-off (PTO) pins.

Steel


Round-Retainer with Loop Closure	Round-Retainer with Loop Closure with Easy-Release Tab	Square-Retainer with Hook Closure

Square-Retainer with Loop Closure	Square-Retainer with Loop Closure with Easy-Release Tab

Zinc-Plated Carbon Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.

Loop Closure with Easy-Release Tab—Grip the tab to open and close with less effort than other wire-retainer clevis pins. The tab sticks out from these pins, so they might catch if space is tight.

	Dia.	Usable Lg.	Dia. Tolerance	Retainer Clearance	Min. Hardness	Lg.		Each
Zinc-Plated Carbon Steel







				Round-Retainer with Loop Closure

				1/4"	1 3/16"	-0.005" to 0.002"	1 5/8"	Rockwell B55	1 15/16"	000000000	00000


				1/4"	1 3/8"	-0.005" to 0.002"	1 9/16"	Rockwell B55	2 5/16"	000000000	0000
				1/4"	1 3/4"	-0.007" to -0.002"	1 5/8"	Not Rated	2 1/4"	000000000	0000
				1/4"	2 3/16"	-0.005" to 0.002"	1 3/4"	Rockwell B55	3 1/16"	000000000	0000
				5/16"	1 3/16"	-0.005" to 0.002"	1 9/16"	Rockwell B55	1 15/16"	000000000	0000
				5/16"	1 3/8"	-0.005" to 0.002"	1 1/2"	Rockwell B55	2 5/16"	000000000	0000
				5/16"	1 3/4"	-0.007" to -0.002"	1 5/8"	Not Rated	2 1/4"	000000000	0000
				5/16"	2 3/16"	-0.005" to 0.002"	1 11/16"	Rockwell B55	3 1/16"	000000000	0000
				5/16"	2 1/2"	-0.007" to -0.002"	2"	Not Rated	3 1/16"	000000000	0000
				3/8"	1 3/16"	-0.005" to 0.002"	1 1/2"	Rockwell B55	1 15/16"	000000000	0000
				3/8"	1 3/8"	-0.005" to 0.002"	1 7/16"	Rockwell B55	2 5/16"	000000000	0000


				3/8"	1 1/2"	-0.007" to -0.002"	1 1/2"	Not Rated	2 1/16"	000000000	0000
				3/8"	2 3/16"	-0.005" to 0.002"	1 5/8"	Rockwell B55	3 1/16"	000000000	0000




						Round-Retainer with Loop Closure with Easy-Release Tab

						1/4"	1 3/8"	-0.005" to 0.002"	1 9/16"	Rockwell B55	2 5/16"	000000000	0000


						1/4"	1 3/4"	-0.007" to -0.002"	1 5/8"	Not Rated	2 1/4"	000000000	0000
						5/16"	1 3/8"	-0.005" to 0.002"	1 1/2"	Rockwell B55	2 5/16"	000000000	0000
						5/16"	2 3/16"	-0.005" to 0.002"	1 3/4"	Rockwell B55	3 1/16"	000000000	0000
						3/8"	1 3/8"	-0.005" to 0.002"	1 7/16"	Rockwell B55	2 5/16"	000000000	0000
						3/8"	2 3/16"	-0.005" to 0.002"	1 3/4"	Rockwell B55	3 1/16"	000000000	0000




								Square-Retainer with Hook Closure

								1/4"	3"	-0.010" to 0.002"	1 1/2"	Rockwell B55	3 3/4"	000000000	0000


								1/4"	3 1/2"	-0.010" to 0.002"	1 3/4"	Rockwell B55	4 1/4"	000000000	0000
								1/4"	4"	-0.010" to 0.002"	2"	Rockwell B55	4 3/4"	000000000	0000
								5/16"	3"	-0.010" to 0.002"	1 1/2"	Rockwell B55	3 3/4"	000000000	0000
								5/16"	3 1/2"	-0.010" to 0.002"	1 3/4"	Rockwell B55	4 1/4"	000000000	00000
								5/16"	4"	-0.005" to 0.002"	2"	Rockwell B55	4 3/4"	000000000	00000
								3/8"	3"	-0.010" to 0.002"	1 1/2"	Rockwell B55	3 3/4"	000000000	00000
								3/8"	3 1/2"	-0.010" to 0.002"	1 3/4"	Rockwell B55	4 1/4"	000000000	00000
								3/8"	4"	-0.005" to 0.002"	2"	Rockwell B55	4 3/4"	000000000	00000
								1/2"	3 1/2"	-0.016" to 0.016"	2 1/2"	Rockwell C22	5 1/8"	000000000	00000
								1/2"	4 1/4"	-0.015" to 0.000"	3"	Rockwell B90	6"	000000000	0000


								5/8"	4"	-0.016" to 0.016"	3 3/8"	Rockwell C22	5 3/4"	000000000	00000
								5/8"	4 1/4"	-0.015" to 0.000"	3"	Rockwell B90	6"	000000000	0000
								3/4"	4"	-0.016" to 0.016"	3 1/4"	Rockwell C22	5 3/4"	000000000	00000
3/4"								4 1/4"	-0.015" to 0.000"	3"	Rockwell B90	6"	000000000	00000
3/4"	6"							-0.016" to 0.016"	3 1/4"	Rockwell C22	7 3/4"	000000000	00000
3/4"	6 1/4"							-0.015" to 0.000"	3"	Rockwell B90	8"	000000000	00000
7/8"	5 1/2"							-0.016" to 0.016"	3 1/4"	Rockwell C22	7 3/8"	000000000	00000
7/8"	6 1/4"							-0.015" to 0.000"	3 1/4"	Rockwell B90	7 1/2"	000000000	00000
1"	5 1/2"	-0.016" to 0.016"						3 1/4"	Rockwell C22	7 3/8"	000000000	00000
1"	6 1/4"	-0.015" to 0.000"	3 1/4"					Rockwell B90	7 3/4"	000000000	00000




		Square-Retainer with Loop Closure

		1/4"	1 7/8"					-0.005" to 0.002"	1 5/8"	Rockwell B55	2 13/16"	000000000	0000


		1/4"	2 3/16"					-0.005" to 0.002"	1 3/4"	Rockwell B55	3 1/16"	000000000	0000
		1/4"	2 1/2"					-0.007" to -0.002"	1 9/16"	Not Rated	3"	000000000	0000
		1/4"	2 7/8"					-0.005" to 0.002"	1 11/16"	Not Rated	3 5/8"	000000000	0000
		5/16"	1 7/8"					-0.005" to 0.002"	1 9/16"	Rockwell B55	2 13/16"	000000000	0000
		5/16"	2 3/16"					-0.005" to 0.002"	1 11/16"	Rockwell B55	3 1/16"	000000000	0000
		5/16"	2 1/2"					-0.007" to -0.002"	1 3/4"	Not Rated	3 1/16"	000000000	0000
		5/16"	2 7/8"					-0.005" to 0.002"	1 11/16"	Rockwell B55	3 9/16"	000000000	0000
		5/16"	3 7/16"					-0.005" to 0.002"	1 5/8"	Not Rated	4 5/16"	000000000	0000
		5/16"	3 9/16"					-0.005" to 0.002"	1 5/8"	Not Rated	4 13/16"	000000000	0000
		3/8"	1 7/8"					-0.005" to 0.002"	1 1/2"	Rockwell B55	2 13/16"	000000000	0000


		3/8"	2 3/16"					-0.005" to 0.002"	1 5/8"	Rockwell B55	3 1/16"	000000000	0000
		3/8"	2 1/4"	-0.007" to -0.002"				1 1/2"	Not Rated	2 7/8"	000000000	0000
		3/8"	2 7/8"	-0.005" to 0.002"	1 5/8"			Rockwell B55	3 9/16"	000000000	0000
		3/8"	3 7/16"	-0.005" to 0.002"	1 5/8"			Not Rated	4 5/16"	000000000	0000
		3/8"	3 9/16"	-0.005" to 0.002"	1 5/8"			Not Rated	4 13/16"	000000000	0000
		1/2"	3 3/32"	-0.005" to 0.002"	1 5/8"			Rockwell B55	3 13/16"	000000000	0000




				Square-Retainer with Loop Closure with Easy-Release Tab

				1/4"	2 1/4"			-0.005" to 0.002"	1 5/8"	Not Rated	3 1/16"	000000000	0000


				5/16"	2 1/4"			-0.005" to 0.002"	1 5/8"	Not Rated	3 1/16"	000000000	0000
				3/8"	2 1/4"	-0.005" to 0.002"		1 5/8"	Not Rated	3 1/16"	000000000	0000

SAE J429 Steel

Square-Retainer

with Loop

Closure

These pins conform to SAE International (formerly the Society of Automotive Engineers) dimensional standards.

Zinc-Flake-Coated Carbon Steel—With a more durable finish than zinc plating, these pins hold up in wet and outdoor environments. While not as corrosion resistant as stainless steel, they are stronger and won't deform under stress.

	Retainer Clearance	Min. Hardness	Lg.		Each
Black-Zinc-Flake-Coated Carbon Steel







	Square-Retainer with Loop Closure

	1/4"	2 3/16"	-0.005" to 0.002"	1 3/4"	Not Rated	3 1/16"	000000000	00000


	5/16"	2 3/16"	-0.005" to 0.002"	1 11/16"	Not Rated	3 1/16"	000000000	0000
	3/8"	2 3/16"	-0.005" to 0.002"	1 5/8"	Not Rated	3 1/16"	000000000	0000
	1/2"	3"	-0.005" to 0.002"	1 5/8"	Not Rated	3 13/16"	000000000	0000

Corrosion-Resistant Stainless Steel


Round-Retainer with Loop Closure	Round-Retainer with Loop Closure with Easy-Release Tab	Square-Retainer with Hook Closure

Square-Retainer with Loop Closure	Square-Retainer with Loop Closure with Easy-Release Tab

18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They're strong enough to fasten most components but won't withstand stress and vibration as well as steel.

	Usable Lg.	Dia. Tolerance	Retainer Clearance	Min. Hardness	Lg.		Each
18-8 Stainless Steel







			Round-Retainer with Loop Closure

			1/4"	1 1/8"	-0.005" to 0.000"	1 5/8"	Rockwell B75	2"	000000000	00000


			1/4"	1 3/8"	-0.005" to 0.000"	1 1/2"	Rockwell B75	2 3/8"	000000000	0000
			1/4"	1 3/4"	-0.007" to -0.002"	1 5/8"	Rockwell B80	2 3/8"	000000000	0000
			1/4"	2 1/8"	-0.005" to 0.000"	1 3/4"	Rockwell B75	3 1/8"	000000000	0000
			5/16"	1 1/8"	-0.005" to 0.000"	1 1/2"	Rockwell B75	2"	000000000	0000
			5/16"	1 3/8"	-0.005" to 0.000"	1 1/2"	Rockwell B75	2 3/8"	000000000	0000
			5/16"	1 3/4"	-0.007" to -0.002"	1 5/8"	Rockwell B80	2 1/4"	000000000	0000
			5/16"	2 1/8"	-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/8"	000000000	0000
			5/16"	2 1/2"	-0.007" to -0.002"	2"	Rockwell B80	3 1/16"	000000000	0000
			3/8"	1 1/8"	-0.005" to 0.000"	1 1/2"	Rockwell B75	2"	000000000	0000
			3/8"	1 3/8"	-0.005" to 0.000"	1 3/8"	Rockwell B75	2 3/8"	000000000	0000


			3/8"	1 1/2"	-0.007" to -0.002"	1 1/2"	Rockwell B80	2 1/16"	000000000	0000
			3/8"	2 1/8"	-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/8"	000000000	0000




					Round-Retainer with Loop Closure with Easy-Release Tab

					1/4"	1 3/8"	-0.005" to 0.000"	1 1/2"	Rockwell B75	2 3/8"	000000000	0000


					1/4"	1 3/4"	-0.007" to -0.002"	1 5/8"	Rockwell B80	2 3/8"	000000000	0000
					5/16"	1 3/8"	-0.005" to 0.000"	1 1/2"	Rockwell B75	2 3/8"	000000000	0000
					5/16"	2 1/8"	-0.005" to 0.000"	1 3/4"	Rockwell B75	3 1/8"	000000000	0000
					3/8"	1 3/8"	-0.005" to 0.000"	1 3/8"	Rockwell B75	2 3/8"	000000000	0000
					3/8"	2 1/8"	-0.005" to 0.000"	1 3/4"	Rockwell B75	3 1/8"	000000000	0000




							Square-Retainer with Hook Closure

							1/4"	3"	-0.010" to 0.000"	1 1/2"	Rockwell B75	3 11/16"	000000000	00000


							1/4"	3 1/2"	-0.010" to 0.000"	1 3/4"	Rockwell B75	4 3/16"	000000000	00000
							1/4"	4"	-0.010" to 0.000"	2"	Rockwell B75	4 11/16"	000000000	00000
							5/16"	3"	-0.010" to 0.000"	1 1/2"	Rockwell B75	3 11/16"	000000000	00000
							5/16"	3 1/2"	-0.010" to 0.000"	1 3/4"	Rockwell B75	4 3/16"	000000000	00000
							5/16"	4"	-0.010" to 0.000"	2"	Rockwell B75	4 11/16"	000000000	00000
							3/8"	3"	-0.010" to 0.000"	1 1/2"	Rockwell B75	3 11/16"	000000000	00000
							3/8"	3 1/2"	-0.010" to 0.000"	1 3/4"	Rockwell B75	4 3/16"	000000000	00000
							3/8"	4"	-0.010" to 0.000"	2"	Rockwell B75	4 11/16"	000000000	00000
							1/2"	3 1/2"	-0.016" to 0.016"	2 1/2"	Rockwell B75	5 1/8"	000000000	00000
							5/8"	4"	-0.016" to 0.016"	3 3/8"	Rockwell B75	5 3/4"	000000000	00000


							3/4"	4"	-0.016" to 0.016"	3 1/4"	Rockwell B75	5 3/4"	000000000	00000
							3/4"	6"	-0.016" to 0.016"	3 1/4"	Rockwell B75	7 3/4"	000000000	00000
							7/8"	5 1/2"	-0.016" to 0.016"	3 1/4"	Rockwell B75	7 5/16"	000000000	00000
1"							5 1/2"	-0.016" to 0.016"	3 1/4"	Rockwell B75	7 5/16"	000000000	00000




	Square-Retainer with Loop Closure

	1/4"	1 7/8"					-0.005" to 0.000"	1 5/8"	Rockwell B75	2 7/8"	000000000	0000


	1/4"	2 1/8"					-0.005" to 0.000"	1 3/4"	Rockwell B75	3 1/8"	000000000	0000
	1/4"	2 1/2"					-0.007" to -0.002"	1 9/16"	Rockwell B80	3"	000000000	00000
	5/16"	1 7/8"					-0.005" to 0.000"	1 1/2"	Rockwell B75	2 7/8"	000000000	0000
	5/16"	2 1/8"					-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/8"	000000000	0000
	5/16"	2 1/2"					-0.007" to -0.002"	1 3/4"	Rockwell B80	3 1/16"	000000000	0000
	5/16"	2 7/8"					-0.005" to 0.000"	1 5/8"	Rockwell B75	3 5/8"	000000000	0000
	3/8"	1 7/8"					-0.005" to 0.000"	1 1/2"	Rockwell B75	2 7/8"	000000000	0000
	3/8"	2 1/8"					-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/8"	000000000	0000
	3/8"	2 1/4"					-0.007" to -0.002"	1 1/2"	Rockwell B80	2 7/8"	000000000	0000
	3/8"	2 7/8"					-0.005" to 0.000"	1 5/8"	Rockwell B75	3 5/8"	000000000	0000


	1/2"	3"					-0.005" to 0.000"	1 5/8"	Rockwell B75	3 13/16"	000000000	00000




							Square-Retainer with Loop Closure with Easy-Release Tab

			1/4"				2 1/4"	-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/16"	000000000	00000


			5/16"	2 1/4"			-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/16"	000000000	00000
			3/8"	2 1/4"			-0.005" to 0.000"	1 5/8"	Rockwell B75	3 1/16"	000000000	00000
			3/8"	2 1/2"			-0.007" to -0.002"	1 1/2"	Rockwell B80	3 1/16"	000000000	00000

Wire-Retainer-End Clips for Telescoping Tubing

Sized to fit snugly around pipe and tube, these clips use spring force to keep the retainer closed. Also known as linch pins and PTO pins, use them for a one-piece alternative to a clevis and cotter pin combination.

				Zinc-Yellow-Chromate-Plated Carbon Steel
For Pipe OD	Dia.	Usable Lg.	Lg.		Each
1 3/8"	3/16"	1 3/8"	1 9/16"	000000000	00000
1 3/8"	1/4"	1 3/8"	1 9/16"	000000000	0000
1 3/8"	5/16"	1 3/8"	1 9/16"	000000000	0000
1 3/4"	5/16"	1 3/4"	1 15/16"	000000000	0000
2 1/8"	25/64"	2 3/16"	2 3/8"	000000000	0000