12MM Clevis Pins | McMaster-Carr

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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







				12 mm Diameter

				23	-0.110 to 0.000	3.2	Rockwell B67	30	20	4	1	000000000	00000


				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	0000
				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

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







				12 mm Diameter

				28	-0.050 to -0.010	3.2	Rockwell B80	35	20	4	000000000	00000


				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







								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

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







				12 mm Diameter

				27	-0.110 to 0	Rockwell B63	30	20	4	1	000000000	00000


				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







				12 mm Diameter

				27	-0.110 to 0	Rockwell B70	30	20	4	1	000000000	00000


				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

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

	Lg., mm		Each
Zinc-Plated Carbon Steel with Retaining Ring







	12 mm Diameter

	27	-0.060 to 0	Rockwell B80	37	000000000	000000


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

Corrosion-Resistant Stainless Steel

	Lg., mm		Each
18-8 Stainless Steel with Retaining Ring







	12 mm Diameter

	32	-0.060 to 0	Rockwell B80	42	000000000	000000


	37	-0.060 to 0	Rockwell B80	47	000000000	00000

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

Flat-Head Quick-Release Pins

With no ring or handle to get caught on nearby components, these pins won’t pull out accidentally. The low profile makes them similar to basic clevis pins. Although the thin head fits in cramped spots, it also makes the pin harder to grab. A retaining ball holds pins in place once installed—pull to remove.

Steel

Image of Product. Front orientation. Contains Annotated. Quick-Release Pins. Flat-Head Quick-Release Pins.

			Head, mm
	Usable Lg., mm	Dia. at Extended Ball Ht., mm	Dia.	Ht.	Single Shear Breaking Strength	Min. Hardness	Ball Material	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				12 mm Diameter

				18	13.5	20	4	Not Rated	Rockwell B60	Stainless Steel	5	000000000	000000


				28	13.5	20	4	Not Rated	Rockwell B60	Stainless Steel	5	000000000	00000
				38	13.5	20	4	Not Rated	Rockwell B60	Stainless Steel	5	000000000	00000
				48	13.5	20	4	Not Rated	Rockwell B60	Stainless Steel	5	000000000	00000

ISO Tie Rod Air Cylinder Mounts

Connect these mounts to an air cylinder to create linear, pivot, or arc movements. These mounts are compatible with ISO tie rod air cylinders.

Clevis Pins

Stainless Steel—Stainless steel mounts are more corrosion resistant than steel and aluminum for use in wet or damp environments.

For Bore Size, mm	Dia., mm	Groove Wd., mm	Lg., mm	Usable Lg., mm	Material	Includes		Each
40	12	1.1	60	53	Stainless Steel	Two Retaining Rings	0000000	000000
50	12	1.1	68	61	Stainless Steel	Two Retaining Rings	0000000	00000