1 1/8" Pins | McMaster-Carr

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

Carbon Steel—Stronger than stainless steel, these pins won't deform from stress and vibration. They perform best in dry environments since moisture will cause them to rust.

						Head
	Usable Lg.	Dia. Tolerance	For Max. Cotter Pin Dia.	Min. Hardness	Lg.	Dia.	Ht.	Pkg. Qty.		Pkg.
Carbon Steel







				1 1/8" Diameter

				2 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	3"	1 3/8"	25/64"	1	000000000	00000


				3 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	4"	1 13/32"	13/32"	1	000000000	00000
				4 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	5"	1 13/32"	13/32"	1	000000000	00000
				5 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	6"	1 13/32"	13/32"	1	000000000	00000
				7 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	8"	1 3/8"	25/64"	1	000000000	00000
				8 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	9"	1 3/8"	25/64"	1	000000000	00000

Heat-Treated Steel

Cotter Pin Not

Included

With additional hardness, these pins are less likely to bend, break, and wear than those that aren't heat treated.

Carbon Steel—Stronger than stainless steel, these pins won't deform from stress and vibration. They perform best in dry environments since moisture will cause them to rust.

Galvanized Carbon Steel—These pins combine the strength of steel with the rust resistance of stainless steel. They're often used as an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.

						Head
	Usable Lg.	Dia. Tolerance	For Max. Cotter Pin Dia.	Min. Hardness	Lg.	Dia.	Ht.	Pkg. Qty.		Pkg.
Carbon Steel







				1 1/8" Diameter

				3 13/16"	-0.013" to 0.000"	3/16"	Rockwell C25	4 1/4"	1 5/8"	3/8"	1	000000000	000000


				Galvanized Carbon Steel







								1 1/8" Diameter

								3 13/16"	-0.013" to 0.000"	3/16"	Rockwell C25	4 1/4"	1 5/8"	3/8"	1	000000000	00000

Corrosion-Resistant Stainless Steel

Cotter Pin Not

Included

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.

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







				1 1/8" Diameter

				2 3/8"	-0.004" to -0.002"	3/16"	Rockwell B80	3"	1 3/8"	11/32"	000000000	000000


				3 3/8"	-0.004" to -0.002"	3/16"	Rockwell B80	4"	1 3/8"	11/32"	000000000	00000

Tethered Loop-Grip Clevis Pins

A lanyard or chain prevents your pin from getting lost when removed. With a large loop handle that's easy to grip and pull, these clevis pins are often used for towing and other applications where you regularly secure and release components.

Steel


With Cotter Pin and Lanyard	With Cotter Pin and Lanyard	With Linch Pin and Chain

Painted Carbon Steel—Stronger than stainless steel, these pins won't deform from stress and vibration. The dark enamel creates a finished look but offers minimal corrosion resistance. They're best for dry environments.

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.

Zinc-Yellow-Chromate-Plated Carbon Steel—With a more durable finish than clear zinc plating, these pins hold up in wet and outdoor environments although not as well as stainless steel. Because the plating resists wear and the steel holds up under stress, they're good for pivoting parts, like rod end linkages.

Cotter Pin Included—The hairpin cotter is quicker to install and remove than a linch pin but not as secure.

Linch Pin Included—Less likely to get knocked or shaken out of place than a hairpin, the linch pin has a ring that snaps down and locks.

	Min. Hardness	Head Dia.	Handle Color		Each
Zinc-Plated Carbon Steel with Cotter Pin and Lanyard







	1 1/8" Diameter

	7"	-0.016" to 0.016"	3/16"	Rockwell C19	2"	—	000000000	000000


	Zinc-Yellow-Chromate-Plated Carbon Steel with Cotter Pin and Lanyard







					1 1/8" Diameter

					7"	-0.016" to 0.016"	3/16"	Rockwell C19	2"	—	000000000	00000


					Zinc-Yellow-Chromate-Plated Carbon Steel with Linch Pin and Chain







									1 1/8" Diameter

									7"	-0.012" to 0.000"	9/32"	Rockwell C28	1 3/4"	—	000000000	00000


									Black-Painted Carbon Steel with Cotter Pin and Lanyard







													1 1/8" Diameter

													8 1/2"	-0.003" to 0.002"	17/64"	Rockwell C32	—	Red	000000000	00000


													12"	-0.003" to 0.002"	11/64"	Rockwell C32	—	Red	000000000	00000

Corrosion-Resistant Stainless Steel

With Cotter Pin and Lanyard

With Linch Pin and Chain

High-Strength 17-4 PH Stainless Steel—The strongest stainless steel pins we offer, these are the least likely to deform due to stress and vibration. Similar to 18-8 stainless steel, they're suitable for most wet and outdoor environments. However, they won't hold up to the harsh conditions and chemicals that 316 stainless steel can.

Cotter Pin Included—The hairpin cotter is quicker to install and remove than a linch pin but not as secure.

Linch Pin Included—Less likely to get knocked or shaken out of place than a hairpin, the linch pin has a ring that snaps down and locks.

	Min. Hardness	Head Dia.		Each
High-Strength 17-4 PH Stainless Steel with Cotter Pin and Lanyard







	1 1/8" Diameter

	7"	-0.016" to 0.016"	3/16"	Rockwell B80	2"	000000000	000000


	High-Strength 17-4 PH Stainless Steel with Linch Pin and Chain







					1 1/8" Diameter

					7"	-0.016" to 0.016"	17/64"	Rockwell B80	2"	000000000	00000

Clevis Pins with Locking Retainer

Secure and release these heavy duty pins with one hand. Swing the welded solid steel retainer closed, and it locks onto the pin until you press the lever to open. Unlike other clevis pins, you don’t have to reach around to insert a cotter pin or worry about it falling out. These are often used for towing since they make it easy to hitch and unhitch your equipment.

Steel

Powder-Coated Carbon Steel—A shiny black finish creates a barrier against rust in damp and outdoor environments. While not as corrosion resistant as stainless steel, these pins are stronger and won't deform under stress.

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







	Square-Retainer

	1 1/8"	7"	-0.003" to 0.010"	3 7/8"	Rockwell C32	11"	000000000	000000

Nonsparking Alignment Pins

Made from aluminum bronze that is Factory Mutual approved, these nonmagnetic, corrosion-resistant pins inhibit sparking. They satisfy OSHA requirements for nonsparking tools for locations where flammable vapors and combustible residues are present. Nonsparking tools are not, however, classified as antistatic because they do conduct electricity. Use alignment pins to align structural components such as I-beams and angle irons for bolting, riveting, and welding.

Note: Do not use these tools in direct contact with acetylene.

					Body
	Point Dia.	Taper Lg.	Dia.	Overall Lg.	Shape	Texture		Each
Aluminum Bronze



		1/2"	6"	1 1/8"	10"	Round	Smooth	0000000	000000

Fixturing for Parts Inspection

From towers and brackets to standoffs and supports, these components are the building blocks for your custom fixturing setup. They elevate parts so you can access a variety of angles for measuring and inspecting while protecting your measuring device from hitting the inspection table. You’ll often see them used with coordinate measuring machines (CMMs). They’re not for use in machining applications.

Adjustable-Height Sleeves

Adjustable-height sleeves convert standoffs with a fixed height into standoffs with an adjustable height. Slide them over your 1/2" diameter standoff and move the sleeve up or down to set your desired height. Lock them in place with the thumb screw.

	Dia.	Ht.	Material	Includes		Each
1/4"-20 Threads



	1/2"	1 1/8"	2"	Acetal	1/4"-20 Knurled Knob	0000000	000000

Shallow-Install Anchors for Block and Brick

Secure window frames and doors in walls where your drilling depth is limited. These anchors have similar strengths to double expansion anchors but only need about 75% of the installation depth. All have a sleeve that expands inside your hole to create a strong grip. The sleeve, commonly called a caulking sleeve, also creates a seal to block out air and moisture. Since the gripping force is distributed along the entire length of these anchors, they won’t crack soft materials like block and brick. They’re also known as caulk-in anchors.

To install, place the anchor into a drilled hole, cone end first. Insert an installation tool (sold separately) into the anchor to expand the sleeve over the cone. Then, position your component, insert a screw or threaded rod, and tighten. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod. They cannot be used in overhead applications.

						Ultimate Strength, lbf
Thread Size	Lg.	Drill Bit Size	Min. Installation Dp.	Sleeve Material	Material	Pull-Out	Shear	Conditions Tested In	Pkg. Qty.		Pkg.
5/8"-11	1 7/8"	1 1/8"	2"	Lead	Zinc	3,880	6,000	4,000 psi Concrete	1	000000000	00000

High-Strength Anchors for Block and Brick

Offering up to twice the strength of double expansion anchors, these US-made anchors expand in four directions for a superior grip in floors, walls, and ceilings. You can even use them to mount heavy machinery with constant motion, such as conveyors and vibrating feeders, because their ridges lock them in place to resist vibration. All of these anchors expand along their full length to distribute the gripping force, so they won’t crack soft materials. You can use them in concrete near edges, corners, or other weak points as an alternative to drop-in anchors.

To install, tap the anchor into a drilled hole. Insert a screw or threaded rod through your machinery and into the anchor. Then, tighten to expand the anchor. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod.

					Ultimate Strength, lbf
Thread Size	Lg.	Drill Bit Size	Min. Installation Dp.	Material	Pull-Out	Shear	Conditions Tested In	Pkg. Qty.		Pkg.
5/8"-11	2 5/8"	1 1/8"	2 5/8"	Zinc	5,600	14,000	3,000 psi Concrete	1	000000000	00000