Metric Clevis Pins | McMaster-Carr

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Minimum Hardness

Sold As

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Highly Corrosion Resistant

Steel Grade

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Specifications Met

Handle Material

For Maximum Cotter Pin Diameter

Cotter Pin Included

137 Products

End Type

Through Hole

Slide a cotter pin into the hole to secure parts

50 products

Retaining Ring Groove

The ring holds securely while taking up less space than a cotter pin

82 products

End Type

Toggle

Lock without the need for a separate cotter pin

5 products

Performance

Corrosion Resistant

Resist rust in wet and outdoor environments

62 products

Clevis Pins

The most commonly used clevis pins—just slide a cotter pin into the hole to secure parts. These pins have a flat, low-profile head to fit in tight spaces. They're less likely to get in the way than pins with a loop grip or T-handle but aren’t as easy to grab if you want to remove them frequently. Add your own cotter pin, or choose a clevis pin that includes a reusable hairpin cotter.

Steel

Cotter Pin Not

Included

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.

						Head, mm
	Usable Lg., mm	Dia. Tolerance, mm	For Max. Cotter Pin Dia., mm	Min. Hardness	Lg., mm	Dia.	Ht.	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				8 mm Diameter

				15	-0.090 to 0.000	2	Rockwell B67	20	14	3	1	000000000	00000


				19	-0.090 to 0.000	2	Rockwell B67	24	14	3	1	000000000	0000
				20	-0.090 to 0.000	2	Rockwell B67	25	14	3	1	000000000	0000
				25	-0.090 to 0.000	2	Rockwell B67	30	14	3	1	000000000	0000
				30	-0.090 to 0.000	2	Rockwell B67	35	14	3	1	000000000	0000
				44	-0.090 to 0.000	2	Rockwell B67	50	14	3	1	000000000	0000




						10 mm Diameter

						19	-0.090 to 0.000	3.2	Rockwell B67	25	18	4	1	000000000	0000


						24	-0.090 to 0.000	3.2	Rockwell B67	30	18	4	1	000000000	0000
						29	-0.110 to 0.000	3.2	Rockwell B67	35	18	4	1	000000000	0000
						34	-0.090 to 0.000	3.2	Rockwell B67	40	18	4	1	000000000	0000
						44	-0.090 to 0.000	3.2	Rockwell B67	50	18	4	1	000000000	0000
						54	-0.090 to 0.000	3.2	Rockwell B67	60	18	4	1	000000000	0000
						64	-0.090 to 0.000	3.2	Rockwell B67	70	18	4	1	000000000	0000




								12 mm Diameter

								23	-0.110 to 0.000	3.2	Rockwell B67	30	20	4	1	000000000	0000


								28	-0.110 to 0.000	3.2	Rockwell B67	35	20	4	1	000000000	0000
								35	-0.110 to 0.000	3.2	Rockwell B67	40	20	4	1	000000000	00000
								38	-0.110 to 0.000	3.2	Rockwell B67	45	20	4	1	000000000	0000
								43	-0.110 to 0.000	3.2	Rockwell B67	50	20	4	1	000000000	0000
								53	-0.110 to 0.000	3.2	Rockwell B67	60	20	4	1	000000000	0000




										16 mm Diameter

										31	-0.110 to 0.000	4	Rockwell B67	40	25	5	1	000000000	0000


										41	-0.110 to 0.000	4	Rockwell B67	50	25	5	1	000000000	00000
										51	-0.110 to 0.000	4	Rockwell B67	60	25	5	1	000000000	00000
										58	-0.110 to 0.000	4	Rockwell B67	65	25	5	1	000000000	00000




												20 mm Diameter

29												-0.130 to 0.000	5	Rockwell B67	40	30	5	1	000000000	00000


39	-0.130 to 0.000											5	Rockwell B67	50	30	5	1	000000000	00000
49	-0.130 to 0.000											5	Rockwell B67	60	30	5	1	000000000	00000
54	-0.130 to 0.000	5										Rockwell B67	65	30	5	1	000000000	00000
82	-0.130 to 0.000	5	Rockwell B67									90	30	5	1	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.

Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant pins, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals. Like 18-8 stainless steel, they're strong enough to fasten most components but won't withstand stress and vibration as well as steel.

						Head, mm
	Usable Lg., mm	Dia. Tolerance, mm	For Max. Cotter Pin Dia., mm	Min. Hardness	Lg., mm	Dia.	Ht.		Each
18-8 Stainless Steel







				8 mm Diameter

				15	-0.050 to -0.010	2	Rockwell B80	20	14	3	000000000	00000


				25	-0.050 to -0.010	2	Rockwell B80	30	14	3	000000000	0000
				30	-0.050 to -0.010	2	Rockwell B80	35	14	3	000000000	0000
				44	-0.050 to -0.010	2	Rockwell B80	50	14	3	000000000	0000




						10 mm Diameter

						24	-0.050 to -0.010	3.2	Rockwell B80	30	18	4	000000000	0000


						34	-0.050 to -0.010	3.2	Rockwell B80	40	18	4	000000000	0000
						44	-0.050 to -0.010	3.2	Rockwell B80	50	18	4	000000000	0000
						54	-0.050 to -0.010	3.2	Rockwell B80	60	18	4	000000000	00000
						64	-0.050 to -0.010	3.2	Rockwell B80	70	18	4	000000000	00000




								12 mm Diameter

								28	-0.050 to -0.010	3.2	Rockwell B80	35	20	4	000000000	0000


								38	-0.050 to -0.010	3.2	Rockwell B80	45	20	4	000000000	0000
								43	-0.050 to -0.010	3.2	Rockwell B80	50	20	4	000000000	00000
								53	-0.050 to -0.010	3.2	Rockwell B80	60	20	4	000000000	00000


								Super-Corrosion-Resistant 316 Stainless Steel







												10 mm Diameter

												24	-0.050 to -0.010	3.2	Rockwell B80	30	18	4	000000000	0000


												34	-0.050 to -0.010	3.2	Rockwell B80	40	18	4	000000000	0000
												44	-0.050 to -0.010	3.2	Rockwell B80	50	18	4	000000000	00000
												54	-0.050 to -0.010	3.2	Rockwell B80	60	18	4	000000000	00000




														12 mm Diameter

23														-0.050 to -0.010	3.2	Rockwell B80	30	20	4	000000000	0000


28	-0.050 to -0.010													3.2	Rockwell B80	35	20	4	000000000	0000
38	-0.050 to -0.010													3.2	Rockwell B80	45	20	4	000000000	00000
43	-0.050 to -0.010	3.2												Rockwell B80	50	20	4	000000000	00000
53	-0.050 to -0.010	3.2	Rockwell B80											60	20	4	000000000	00000

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

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







			3 mm Diameter

			10	-0.050 to 0	Rockwell B80	16	000000000	00000


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




					4 mm Diameter

					10	-0.050 to 0	Rockwell B80	16	000000000	0000


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




							6 mm Diameter

							12	-0.050 to 0	Rockwell B80	18	000000000	0000


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




									8 mm Diameter

									20	-0.050 to 0	Rockwell B80	28	000000000	00000


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




											10 mm Diameter

											24	-0.050 to 0	Rockwell B80	34	000000000	00000


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




											12 mm Diameter

	27										-0.060 to 0	Rockwell B80	37	000000000	00000


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

Corrosion-Resistant Stainless Steel

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







			3 mm Diameter

			10	-0.050 to 0	Rockwell B80	16	000000000	00000


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




					4 mm Diameter

					10	-0.050 to 0	Rockwell B80	16	000000000	0000


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




							6 mm Diameter

							12	-0.050 to 0	Rockwell B80	18	000000000	00000


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




									8 mm Diameter

									20	-0.050 to 0	Rockwell B80	28	000000000	00000


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




											10 mm Diameter

											24	-0.050 to 0	Rockwell B80	34	000000000	00000


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




											12 mm Diameter

	32										-0.060 to 0	Rockwell B80	42	000000000	00000


	37	-0.060 to 0									Rockwell B80	47	000000000	00000

Clevis Pins with Retaining Ring Groove

Insert the retaining ring into the groove for a secure hold that takes up less space than a cotter pin. The ring surrounds the entire pin, so bumps are unlikely to work these pins out of a hole.

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

Steel

					Head, mm
	Usable Lg., mm	Dia. Tolerance, mm	Min. Hardness	Lg., mm	Dia.	Ht.	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel with Retaining Ring







				6 mm Diameter

				18	-0.070 to 0	Rockwell B63	20	10	2	5	000000000	00000


				23	-0.070 to 0	Rockwell B63	25	10	2	5	000000000	0000
				28	-0.070 to 0	Rockwell B63	30	10	2	5	000000000	0000
				33	-0.070 to 0	Rockwell B63	35	10	2	5	000000000	0000




						8 mm Diameter

						18	-0.090 to 0	Rockwell B63	20	14	3	5	000000000	0000


						23	-0.090 to 0	Rockwell B63	25	14	3	5	000000000	0000
						27	-0.090 to 0	Rockwell B63	30	14	3	5	000000000	0000
						33	-0.090 to 0	Rockwell B63	35	14	3	5	000000000	0000




								10 mm Diameter

								22	-0.090 to 0	Rockwell B63	25	18	4	5	000000000	0000


								27	-0.090 to 0	Rockwell B63	30	18	4	5	000000000	0000
								37	-0.090 to 0	Rockwell B63	40	18	4	5	000000000	0000
								47	-0.090 to 0	Rockwell B63	50	18	4	5	000000000	00000
								57	-0.090 to 0	Rockwell B63	60	18	4	5	000000000	00000
								67	-0.090 to 0	Rockwell B63	70	18	4	5	000000000	00000




										12 mm Diameter

										27	-0.110 to 0	Rockwell B63	30	20	4	1	000000000	0000


										32	-0.110 to 0	Rockwell B63	35	20	4	1	000000000	0000
										37	-0.110 to 0	Rockwell B63	40	20	4	1	000000000	0000
										47	-0.110 to 0	Rockwell B63	50	20	4	1	000000000	0000
										57	-0.110 to 0	Rockwell B63	60	20	4	1	000000000	0000

Corrosion-Resistant Stainless Steel

					Head, mm
	Usable Lg., mm	Dia. Tolerance, mm	Min. Hardness	Lg., mm	Dia.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel with Retaining Ring







				6 mm Diameter

				23	-0.070 to 0.01	Rockwell B70	25	10	2	5	000000000	00000


				28	-0.070 to 0	Rockwell B70	30	10	2	5	000000000	0000
				33	-0.070 to 0	Rockwell B70	35	10	2	5	000000000	0000




						8 mm Diameter

						18	-0.090 to 0	Rockwell B70	20	14	3	5	000000000	00000


						23	-0.090 to 0	Rockwell B70	25	14	3	5	000000000	00000
						28	-0.090 to 0	Rockwell B70	30	14	3	5	000000000	00000
						33	-0.090 to 0	Rockwell B70	35	14	3	5	000000000	00000




								10 mm Diameter

								22	-0.090 to 0	Rockwell B70	25	18	4	1	000000000	0000


								27	-0.090 to 0	Rockwell B70	30	18	4	1	000000000	0000
								36	-0.090 to 0	Rockwell B70	40	18	4	1	000000000	0000
								47	-0.090 to 0	Rockwell B70	50	18	4	1	000000000	0000
								57	-0.090 to 0	Rockwell B70	60	18	4	1	000000000	0000
								67	-0.090 to 0	Rockwell B70	70	18	4	1	000000000	0000




										12 mm Diameter

										27	-0.110 to 0	Rockwell B70	30	20	4	1	000000000	0000


										32	-0.110 to 0	Rockwell B70	35	20	4	1	000000000	0000
										37	-0.110 to 0	Rockwell B70	40	20	4	1	000000000	0000
										47	-0.110 to 0	Rockwell B70	50	20	4	1	000000000	0000
										57	-0.110 to 0	Rockwell B70	60	20	4	1	000000000	0000

Loop-Grip Clevis Pins with Toggle

For components you need to lock in place but also disconnect frequently, these pins have a toggle end and large loop handle. No need for a separate cotter pin, the toggle swivels so you can insert into a hole and then swivels back to secure. Fold down the handle to save space when installed.

Steel

		Each
Zinc-Plated Carbon Steel







	12 mm Diameter

	90	-0.110 to 0	Rockwell B70	000000000	000000




			16 mm Diameter

			90	-0.110 to 0	Rockwell B70	000000000	00000




					20 mm Diameter

					150	-0.130 to 0	Rockwell B70	000000000	00000




							25 mm Diameter

							100	-0.130 to 0	Rockwell B70	000000000	00000

Ring-Grip Clevis Pins with Toggle

Attach a lanyard or tags to the split ring on these pins, and then lock them in place with the toggle. As you push the pin into a hole, the toggle swivels so you can insert and then swivels back to secure—no need for a separate cotter pin. The ring folds down out of the way to save space when installed.

Steel

		Each
Zinc-Plated Carbon Steel







	10 mm Diameter

	70	-0.090 to 0	Rockwell B70	000000000	00000