Retaining Ring Head Fasteners

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18-8 Stainless Steel

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Retaining Ring Groove

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153 Products

Headless Clevis Pins with Retaining Ring Grooves

Secured with a retaining ring at either end, you can add and remove parts without having to take the pin all the way out. These pins are commonly used with rod ends, hydraulic cylinders, and other pivoting components. In addition to taking up less space than cotter pins, the retaining rings surround the entire pin, so bumps are unlikely to work it loose.

Unlike most cotter pins, which install by hand, you will need retaining ring pliers to insert and remove the included rings.

Steel

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.

	Usable Lg.	Dia. Tolerance	Min. Hardness	Lg.		Each
Zinc-Plated Carbon Steel with Retaining Ring







				3/16" Diameter

				1/2"	-0.002" to 0"	Rockwell B80	3/4"	000000000	00000


				3/4"	-0.002" to 0"	Rockwell B80	1 1/8"	000000000	0000
				1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	0000
				1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	0000
				1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	0000
				2"	-0.002" to 0"	Rockwell B80	2 1/4"	000000000	0000




						1/4" Diameter

						1/2"	-0.002" to 0"	Rockwell B80	7/8"	000000000	0000


						3/4"	-0.002" to 0"	Rockwell B80	1 1/8"	000000000	0000
						1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	0000
						1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	0000
						1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	0000
						2"	-0.002" to 0"	Rockwell B80	2 3/8"	000000000	0000
						3"	-0.002" to 0"	Rockwell B80	3 1/2"	000000000	0000




								5/16" Diameter

								3/4"	-0.002" to 0"	Rockwell B80	1 1/8"	000000000	0000


								1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	0000
								1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	0000
								1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	0000




										3/8" Diameter

										3/4"	-0.002" to 0"	Rockwell B80	1 1/4"	000000000	0000


										1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	0000
										1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	0000
										1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	0000
										1 3/4"	-0.002" to 0"	Rockwell B80	2 1/4"	000000000	0000
										2"	-0.002" to 0"	Rockwell B80	2 3/8"	000000000	0000
										2 1/4"	-0.002" to 0"	Rockwell B80	2 3/4"	000000000	00000
										2 1/2"	-0.002" to 0"	Rockwell B80	2 7/8"	000000000	0000
										3"	-0.002" to 0"	Rockwell B80	3 3/8"	000000000	0000




	1/2" Diameter

	1"										-0.002" to 0"	Rockwell B80	1 1/2"	000000000	0000


	1 1/4"	-0.002" to 0"									Rockwell B80	1 3/4"	000000000	0000
	1 1/2"	-0.002" to 0"	Rockwell B80								2"	000000000	0000
	1 3/4"	-0.002" to 0"	Rockwell B80								2 1/4"	000000000	00000
	2"	-0.002" to 0"	Rockwell B80								2 1/2"	000000000	0000
	2 1/4"	-0.002" to 0"	Rockwell B80								2 3/4"	000000000	00000
	2 1/2"	-0.002" to 0"	Rockwell B80								3"	000000000	0000
	2 3/4"	-0.002" to 0"	Rockwell B80								3 1/4"	000000000	00000
	3"	-0.002" to 0"	Rockwell B80								3 1/2"	000000000	0000
	3 1/4"	-0.002" to 0"	Rockwell B80								3 5/8"	000000000	00000
	3 1/2"	-0.002" to 0"	Rockwell B80								4"	000000000	00000


	3 3/4"	-0.002" to 0"	Rockwell B80								4 1/8"	000000000	00000
	4"	-0.002" to 0"	Rockwell B80								4 1/2"	000000000	00000
	4 1/4"	-0.002" to 0"	Rockwell B80	4 5/8"							000000000	00000
	4 3/4"	-0.002" to 0"	Rockwell B80	5 1/8"	000000000						00000




			3/4" Diameter

			1 1/2"	-0.002" to 0"	Rockwell B80						2 1/4"	000000000	00000


			1 3/4"	-0.002" to 0"	Rockwell B80						2 1/2"	000000000	00000
			2"	-0.002" to 0"	Rockwell B80						2 3/4"	000000000	00000
			2 1/4"	-0.002" to 0"	Rockwell B80						3"	000000000	00000
			2 1/2"	-0.002" to 0"	Rockwell B80						3 1/4"	000000000	00000
			2 3/4"	-0.002" to 0"	Rockwell B80						3 1/2"	000000000	00000
			3"	-0.002" to 0"	Rockwell B80	3 3/4"					000000000	00000
			3 1/4"	-0.002" to 0"	Rockwell B80	4"	000000000				00000
			3 1/2"	-0.002" to 0"	Rockwell B80	4 1/4"	000000000				00000
			3 3/4"	-0.002" to 0"	Rockwell B80	4 1/2"	000000000				00000
			4 1/4"	-0.002" to 0"	Rockwell B80	5"	000000000				00000




					3 mm Diameter

					10 mm	-0.050 mm to 0 mm	Rockwell B80				16 mm	000000000	0000


					16 mm	-0.050 mm to 0 mm	Rockwell B80	22 mm	000000000		0000
					20 mm	-0.050 mm to 0 mm	Rockwell B80	26 mm	000000000		0000
					24 mm	-0.050 mm to 0 mm	Rockwell B80	30 mm	000000000		0000




							4 mm Diameter

							10 mm	-0.050 mm to 0 mm	Rockwell B80		16 mm	000000000	0000


							16 mm	-0.050 mm to 0 mm	Rockwell B80		22 mm	000000000	0000
							20 mm	-0.050 mm to 0 mm	Rockwell B80		26 mm	000000000	0000
24 mm							-0.050 mm to 0 mm	Rockwell B80	30 mm		000000000	0000




								6 mm Diameter

								12 mm	-0.050 mm to 0 mm	Rockwell B80	18 mm	000000000	0000


								20 mm	-0.050 mm to 0 mm	Rockwell B80	26 mm	000000000	0000
								24 mm	-0.050 mm to 0 mm	Rockwell B80	30 mm	000000000	0000
								30 mm	-0.050 mm to 0 mm	Rockwell B80	36 mm	000000000	00000




										8 mm Diameter

										20 mm	-0.050 mm to 0 mm	Rockwell B80	28 mm	000000000	00000


										24 mm	-0.050 mm to 0 mm	Rockwell B80	32 mm	000000000	00000
										30 mm	-0.050 mm to 0 mm	Rockwell B80	38 mm	000000000	00000
	40 mm									-0.050 mm to 0 mm	Rockwell B80	48 mm	000000000	00000




										10 mm Diameter

										24 mm	-0.050 mm to 0 mm	Rockwell B80	34 mm	000000000	00000


										30 mm	-0.050 mm to 0 mm	Rockwell B80	40 mm	000000000	00000
										40 mm	-0.050 mm to 0 mm	Rockwell B80	50 mm	000000000	00000
										50 mm	-0.050 mm to 0 mm	Rockwell B80	60 mm	000000000	00000




												12 mm Diameter

			27 mm									-0.060 mm to 0 mm	Rockwell B80	37 mm	000000000	00000


			47 mm	-0.060 mm to 0 mm								Rockwell B80	57 mm	000000000	00000
			57 mm	-0.060 mm to 0 mm								Rockwell B80	67 mm	000000000	00000

Corrosion-Resistant Stainless Steel

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.

	Dia. Tolerance	Min. Hardness	Lg.		Each
18-8 Stainless Steel with Retaining Ring







			3/16" Diameter

			1/2"	-0.002" to 0"	Rockwell B80	3/4"	000000000	00000


			3/4"	-0.002" to 0"	Rockwell B80	1 1/8"	000000000	0000
			1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	0000
			1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	0000
			1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	0000
			2"	-0.002" to 0"	Rockwell B80	2 1/4"	000000000	0000




					1/4" Diameter

					1/2"	-0.002" to 0"	Rockwell B80	7/8"	000000000	0000


					3/4"	-0.002" to 0"	Rockwell B80	1 1/8"	000000000	0000
					1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	0000
					1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	0000
					1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	00000
					2"	-0.002" to 0"	Rockwell B80	2 3/8"	000000000	00000
					3"	-0.002" to 0"	Rockwell B80	3 1/4"	000000000	00000




							5/16" Diameter

							3/4"	-0.002" to 0"	Rockwell B80	1 1/8"	000000000	0000


							1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	00000
							1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	00000
							1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	00000
							2"	-0.002" to 0"	Rockwell B80	2 3/8"	000000000	00000




									3/8" Diameter

									1/2"	-0.002" to 0"	Rockwell B80	7/8"	000000000	0000


									3/4"	-0.002" to 0"	Rockwell B80	1 1/4"	000000000	00000
									1"	-0.002" to 0"	Rockwell B80	1 3/8"	000000000	00000
									1 1/4"	-0.002" to 0"	Rockwell B80	1 5/8"	000000000	00000
									1 1/2"	-0.002" to 0"	Rockwell B80	1 7/8"	000000000	00000
									1 3/4"	-0.002" to 0"	Rockwell B80	2 1/4"	000000000	00000
									2"	-0.002" to 0"	Rockwell B80	2 3/8"	000000000	00000
									2 1/4"	-0.002" to 0"	Rockwell B80	2 3/4"	000000000	00000
									2 1/2"	-0.002" to 0"	Rockwell B80	2 7/8"	000000000	00000
									3"	-0.002" to 0"	Rockwell B80	3 3/8"	000000000	00000




									1/2" Diameter

	1"								-0.002" to 0"	Rockwell B80	1 1/2"	000000000	00000


	1 1/4"	-0.002" to 0"							Rockwell B80	1 3/4"	000000000	00000
	1 1/2"	-0.002" to 0"							Rockwell B80	2"	000000000	00000
	1 3/4"	-0.002" to 0"							Rockwell B80	2 1/4"	000000000	00000
	2"	-0.002" to 0"							Rockwell B80	2 1/2"	000000000	00000
	2 1/4"	-0.002" to 0"							Rockwell B80	2 3/4"	000000000	00000
	2 1/2"	-0.002" to 0"							Rockwell B80	3"	000000000	00000
	2 3/4"	-0.002" to 0"							Rockwell B80	3 1/4"	000000000	00000
	3"	-0.002" to 0"							Rockwell B80	3 1/2"	000000000	00000
	3 1/4"	-0.002" to 0"							Rockwell B80	3 5/8"	000000000	00000
	3 1/2"	-0.002" to 0"							Rockwell B80	4"	000000000	00000


	3 3/4"	-0.002" to 0"	Rockwell B80	4 1/8"					000000000	00000
	4"	-0.002" to 0"	Rockwell B80	4 1/2"					000000000	00000
	4 1/4"	-0.002" to 0"	Rockwell B80	4 5/8"					000000000	00000
	4 3/4"	-0.002" to 0"	Rockwell B80	5 1/8"					000000000	00000




			5/8" Diameter

			2 1/2"	-0.002" to 0"					Rockwell B80	3"	000000000	00000


			3"	-0.002" to 0"					Rockwell B80	3 1/2"	000000000	00000




					3/4" Diameter

					1 1/2"	-0.002" to 0"			Rockwell B80	2 1/4"	000000000	00000


					1 3/4"	-0.002" to 0"			Rockwell B80	2 1/2"	000000000	00000
					2"	-0.002" to 0"			Rockwell B80	2 3/4"	000000000	00000
					2 1/4"	-0.002" to 0"			Rockwell B80	3"	000000000	00000
					2 1/2"	-0.002" to 0"			Rockwell B80	3 1/4"	000000000	00000
					2 3/4"	-0.002" to 0"			Rockwell B80	3 1/2"	000000000	00000
					3"	-0.002" to 0"			Rockwell B80	3 3/4"	000000000	00000
					3 1/4"	-0.002" to 0"	Rockwell B80		4"	000000000	00000
					3 1/2"	-0.002" to 0"	Rockwell B80	4 1/4"	000000000	00000
					3 3/4"	-0.002" to 0"	Rockwell B80	4 1/2"	000000000	00000
					4 1/4"	-0.002" to 0"	Rockwell B80	5"	000000000	00000




							3 mm Diameter

							10 mm	-0.050 mm to 0 mm	Rockwell B80	16 mm	000000000	0000


							16 mm	-0.050 mm to 0 mm	Rockwell B80	22 mm	000000000	0000
							20 mm	-0.050 mm to 0 mm	Rockwell B80	26 mm	000000000	0000
							24 mm	-0.050 mm to 0 mm	Rockwell B80	30 mm	000000000	00000




							4 mm Diameter

							10 mm	-0.050 mm to 0 mm	Rockwell B80	16 mm	000000000	0000


							16 mm	-0.050 mm to 0 mm	Rockwell B80	22 mm	000000000	0000
							20 mm	-0.050 mm to 0 mm	Rockwell B80	26 mm	000000000	00000
							24 mm	-0.050 mm to 0 mm	Rockwell B80	30 mm	000000000	00000




									6 mm Diameter

									12 mm	-0.050 mm to 0 mm	Rockwell B80	18 mm	000000000	00000


									20 mm	-0.050 mm to 0 mm	Rockwell B80	26 mm	000000000	00000
									24 mm	-0.050 mm to 0 mm	Rockwell B80	30 mm	000000000	00000
									30 mm	-0.050 mm to 0 mm	Rockwell B80	36 mm	000000000	00000




									8 mm Diameter

									20 mm	-0.050 mm to 0 mm	Rockwell B80	28 mm	000000000	00000


									24 mm	-0.050 mm to 0 mm	Rockwell B80	32 mm	000000000	00000
									30 mm	-0.050 mm to 0 mm	Rockwell B80	38 mm	000000000	00000
			40 mm						-0.050 mm to 0 mm	Rockwell B80	48 mm	000000000	00000




									10 mm Diameter

									24 mm	-0.050 mm to 0 mm	Rockwell B80	34 mm	000000000	00000


									30 mm	-0.050 mm to 0 mm	Rockwell B80	40 mm	000000000	00000
									40 mm	-0.050 mm to 0 mm	Rockwell B80	50 mm	000000000	00000
									50 mm	-0.050 mm to 0 mm	Rockwell B80	60 mm	000000000	00000




											12 mm Diameter

					32 mm						-0.060 mm to 0 mm	Rockwell B80	42 mm	000000000	00000


					37 mm	-0.060 mm to 0 mm					Rockwell B80	47 mm	000000000	00000