1 1/4" Dowel Pins | McMaster-Carr

Precisely align machine parts and prevent movement during assembly. These dowel pins are machined to tight tolerances and have a uniform diameter for a snug fit. They can also be used as a pivot, shaft, or hinge to join moving components. Since dowel pins can be hard to remove, they are best suited for permanent fixtures that don't require frequent adjustments or disassembly.

Steel

High-Strength Alloy Steel—Our strongest, most wear-resistant pins, these won't bend or break from vibration. Use them for high-stress applications, such as mounting and aligning hydraulic cylinders and injection molds. They perform best in dry environments since moisture will cause them to rust.

Material Certificate—Pins include a report with a traceable lot number and a description of their chemical, physical, and mechanical properties.

	Min. Hardness	Specs. Met	Certificate Type	Pkg. Qty.		Pkg.
High-Strength Alloy Steel







	1 1/4" Diameter

	1 1/2"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A950	000000


	2"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	Material Certificate	1	98381A952	00000
	3"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	Material Certificate	1	98381A956	00000
	4"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	Material Certificate	1	98381A960	00000
	6"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	Material Certificate	1	98381A968	00000

Corrosion-Resistant Stainless Steel About Corrosion-Resistant Stainless Steel

High-Strength Machinable 416 Stainless Steel—These pins hold their shape under stress and friction from moving parts. In addition to being the strongest stainless steel alloy, 416 is also the most machinable, so you can shape these pins to fit your hole. However, they are the least corrosion-resistant stainless steel option.

Material Certificate—Pins include a report with a traceable lot number and a description of their chemical, physical, and mechanical properties.

	Min. Hardness	Certificate Type	Pkg. Qty.		Pkg.
High-Strength Machinable 416 Stainless Steel







	1 1/4" Diameter

	1 1/2"	0.0001" to 0.0003"	Not Rated	Rockwell C36	—	1	98380A790	000000


	2"	0.0001" to 0.0003"	Not Rated	Rockwell C36	—	1	98380A792	00000
	3"	0.0001" to 0.0003"	Not Rated	Rockwell C36	Material Certificate	1	98380A794	00000
	4"	0.0001" to 0.0003"	Not Rated	Rockwell C36	Material Certificate	1	98380A796	00000
	6"	0.0001" to 0.0003"	Not Rated	Rockwell C36	Material Certificate	1	98380A798	00000

Quarter-Turn Quick-Change Fixture Clamps

Install these clamps into fixture plates, machine subplates, and tombstones to quickly swap components in or out of your machining setup. They lock or unlock with the turn of a knob. Since they locate while they clamp, you can accurately position components with repeatability of ±0.1".

For accurate positioning, use at least two sets of clamps and cam receptacles. Install receptacles into a base plate and clamps into a fixture plate. Line up the two plates, insert the clamps into the receptacles, then turn the knobs to secure your fixture in place. If you need more holding capacity, use additional clamps and receptacles.

Cam Receptacles


Fastener Mount	Thread In

Fastener Mount—Fastener-mount receptacles have three recessed holes on the face so you can secure them to your base plate with the included screws.

Thread In—Thread-in receptacles have a threaded body for installation in a tapped hole. You hold them in place with the included nut, so they’re good for thin base plates.

	For Fixture Plate Thk.
	Min.	Max.	For Clamp Shank Dia., mm	Dia.	Thk.	Thread Size	Material	Mounting Fasteners Included		Each
Fastener Mount



		1/2"	Not Rated	8	1 1/4"	7/16"	—	Nickel-Plated Steel	Yes	9952N124	000000


		Thread In



				1/4"	1/2"	8	1 1/4"	11/16"	M20 × 1.5 mm	Nickel-Plated Steel	—	9952N125	00000

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


Carbon Steel	Zinc-Plated Carbon Steel

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.

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







				1 1/4" Diameter

				2 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	3"	1 31/64"	11/32"	—	1	98306A692	000000


				3 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	4"	1 1/2"	11/32"	—	1	98306A851	00000
				4 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	5"	1 1/2"	11/32"	Material Certificate	1	98306A852	00000
				5 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	6"	1 1/2"	11/32"	—	1	98306A853	00000


				Zinc-Plated Carbon Steel







								1 1/4" Diameter

								3 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	4"	1 31/64"	11/32"	Material Certificate	1	97245A774	00000


								4 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	5"	1 31/64"	11/32"	Material Certificate	1	97245A775	00000
								5 3/8"	-0.020" to 0.000"	3/16"	Rockwell B63	6"	1 31/64"	11/32"	Material Certificate	1	97245A776	00000

Corrosion-Resistant Stainless Steel


18-8 Stainless Steel	High-Strength 17-4 PH 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.

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.

						Head
	Usable Lg.	Dia. Tolerance	For Max. Cotter Pin Dia.	Min. Hardness	Lg.	Dia.	Ht.	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				1 1/4" Diameter

				2 3/8"	-0.004" to -0.002"	3/16"	Rockwell B80	3"	1 1/2"	11/32"	Material Certificate	1	90378A268	000000


				3 3/8"	-0.020" to 0.000"	1/2"	Rockwell B80	4"	1 1/2"	11/32"	Material Certificate	1	92390A841	00000
				4 3/8"	-0.020" to 0.000"	1/2"	Rockwell B80	5"	1 1/2"	11/32"	—	1	92390A849	00000


				High-Strength 17-4 PH Stainless Steel







								1 1/4" Diameter

								2 3/8"	-0.004" to -0.002"	3/16"	Rockwell C28	3"	1 1/2"	11/32"	Material Certificate	1	93392A273	00000


								3 3/8"	-0.004" to -0.002"	3/16"	Rockwell C28	4"	1 1/2"	11/32"	Material Certificate	1	93392A274	00000
								4 3/8"	-0.004" to -0.002"	3/16"	Rockwell C28	5"	1 1/2"	11/32"	—	1	93392A275	00000

Domed-Head Locating and Support Buttons

Support rounded or irregularly shaped workpieces from the bottom or side with minimal contact. Press the stud into a drilled hole for permanent installation. Also known as rest buttons.

			Stud		Tolerance
	Dia.	Lg.	Dia.	Lg.	Lg.	Stud Dia.		Each
Steel



		1 1/4"	1 1/4"	3/4"	7/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N21	000000

Screw-Mount Locating and Support Buttons

Flat Head

Also known as rest buttons, these buttons support workpieces and fixtures from the bottom or side. Mount them onto a screw or stud extending from your jig or table.

Round—Round buttons have an unthreaded, counterbored through hole. Mount them to a socket head cap screw.

	Lg.	Lg. Tolerance	For Mounting Screw Size	Mounting Fasteners Included		Each
Steel—Round with Flat Head



	1 1/4"	7/8"	-0.001" to 0.001"	1/2"	No	8506A27	00000


	1 1/4"	1 1/2"	0" to 0.001"	3/8"	No	8506A113	00000
	1 1/4"	2"	0" to 0.001"	3/8"	No	8506A115	00000

Alignment Pins

Line up holes by driving these pins through existing rivet, pin, and bolt holes in multiple pieces of metal. Alternatively known as lineup taper punches.

					Body
	Point Dia.	Taper Lg.	Dia.	Overall Lg.	Shape	Texture		Each
Steel



		7/16"	10 1/2"	1 1/4"	12"	Round	Smooth	6055A5	000000


		7/16"	10 1/2"	1 1/4"	15"	Round	Smooth	6055A8	00000

Impact-Resistant Alignment Pins


	Alignment Pins with Tether Hole

Often called bull pins, these pins are designed to resist mushrooming caused by repeated pounding. The large striking surface allows you to drive the pins quickly and efficiently. Use alignment pins to align structural components such as I-beams and angle irons for bolting, riveting, and welding.

Alignment Pins with Tether Hole—For added safety, choose pins with a tether hole while working from heights.

					Body
	Point Dia.	Taper Lg.	Dia.	Overall Lg.	Shape	Texture		Each
Steel







				Alignment Pins

				5/16"	9 3/4"	1 1/4"	13"	Round	Smooth	6057A12	000000




						Alignment Pins with Tether Hole

						5/16"	6 5/16"	1 1/4"	13 3/4"	Round	Smooth	6057A14	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 1/4"	7"	-0.003" to 0.010"	3 7/8"	Rockwell C32	11"	91533A600	000000

Tethered Loop-Grip Clevis Pins

Lock and release components again and again without losing your cotter or linch pin. These clevis pins have a lanyard or chain that keeps your securing pin attached. The loop handle is large enough for multiple fingers, so you can get the leverage you need to easily grip and pull it. They’re often used for towing and other applications that require frequent pin removal.

Steel


With Cotter Pin and Lanyard	With Cotter Pin and Lanyard

With Linch Pin and Chain	With Cotter Pin and Lanyard

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 and Zinc-Yellow-Chromate-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.

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.

Plastic-Coated Handle—Prevents your grip from slipping on the handle.

Pivoting Handle—Folds down when installed to save space.

						Handle
	Usable Lg.	Dia. Tolerance	For Max. Cotter Pin Dia.	Min. Hardness	Head Dia.	Color	Finish	Type		Each
Zinc-Plated Carbon Steel with Cotter Pin and Lanyard







				1 1/4" Diameter

				7"	-0.016" to 0.016"	3/16"	Rockwell C19	2"	—	Zinc Plated	Pivoting	98412A519	000000


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







								1 1/4" Diameter

								7"	-0.016" to 0.016"	3/16"	Rockwell C19	2"	—	Zinc Yellow-Chromate Plated	Pivoting	98412A247	00000


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







												1 1/4" Diameter

												7"	-0.012" to 0.000"	9/32"	Rockwell C28	1 7/8"	—	Zinc Yellow-Chromate Plated	Pivoting	98497A675	00000


												Black-Painted Carbon Steel with Cotter Pin and Lanyard







																1 1/4" Diameter

																5 1/2"	-0.003" to 0.002"	17/64"	Rockwell C32	2 3/8"	Red	Plastic Coated	Fixed	91594A718	00000


																8 1/2"	-0.003" to 0.002"	17/64"	Rockwell C32	2 3/8"	Red	Plastic Coated	Fixed	91594A360	00000
																12"	-0.003" to 0.002"	11/64"	Rockwell C32	2 3/8"	Red	Plastic Coated	Fixed	91594A670	00000

Corrosion-Resistant Stainless Steel


With Cotter Pin and Lanyard	With Linch Pin and Chain

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.

Pivoting Handle—Folds down when installed to save space.

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







	1 1/4" Diameter

	7"	-0.016" to 0.016"	3/16"	Rockwell B80	2"	Pivoting	98412A504	000000


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







					1 1/4" Diameter

					7"	-0.016" to 0.016"	17/64"	Rockwell B80	2"	Pivoting	98497A490	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.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Steel

Image of Product. Front orientation. Contains Annotated. Clevis Pins. Loop-Grip Clevis Pins with Toggle.

	Head Dia.	Handle Finish	Certificate Type		Each
Zinc-Plated Carbon Steel







	1 1/4" Diameter

	7"	-0.010" to 0"	Rockwell B70	1 7/8"	Zinc Plated	Material Certificate	97141A712	000000

T-Handle Clevis Pins

Grip the T-shaped handle to install and remove these pins with minimal effort, even with slippery or gloved hands. To secure them, slide a cotter pin into the hole.

Steel

Wide Handle

Wide Handle—The easiest of our clevis pins to grip since the handle is big enough for your entire hand. However, they take up the most space when installed. The handle is coated in plastic to keep your hand from slipping.

	Handle Wd.	For Max. Cotter Pin Dia.	Min. Hardness	Lg.	Handle Color		Each
Black-Zinc-Plated Carbon Steel







	Wide Handle

	1 1/4"	-0.003" to 0.001"	7"	4"	1/4"	Rockwell B90	9 5/8"	Black	91640A170	000000

Tooth-Slotted Spring Pins

End View

The interlocking teeth resist pulling forces that can cause other slotted pins to wiggle out of place. These pins stay in position under vibration and in holes that aren't perfectly round. Compress pins to insert them in a hole. Once installed, they expand slightly and create tension to hold parts in place. Also known as roll pins.

Black-Oxide Spring Steel—These pins won't deform from stress and vibration. The dark, matte coating creates a finished look with minimal corrosion resistance, so they're best for dry environments.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Double Shear Breaking Strength, lbf	Min. Hardness		Each
Black-Oxide Spring Steel







	1 1/4" Diameter

	4"	1.25" to 1.252"	0.23"	53,500	Rockwell C42	90354A118	000000


	6"	1.25" to 1.252"	0.23"	53,500	Rockwell C42	90354A121	00000

Loop-Grip Clevis Pins

Easily grip and pull these pins to quickly release components. The loop handle is large enough for multiple fingers to give you more leverage than you can get with standard clevis pins. These pins are often used for towing and other applications that require frequent pin removal.

Steel


Zinc-Yellow-Chromate-Plated Carbon Steel with Cotter Pin	Black-Painted Carbon Steel with Cotter Pin

Zinc-Yellow-Chromate-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.

Plastic-Coated Handle—Prevents your grip from slipping on the handle.

Pivoting Handle—Folds down when installed to save space.

						Handle
	Usable Lg.	Dia. Tolerance	For Max. Cotter Pin Dia.	Min. Hardness	Head Dia.	Color	Finish	Type		Each
Zinc-Yellow-Chromate-Plated Carbon Steel with Cotter Pin







				1 1/4" Diameter

				6 1/4"	-0.010" to 0.000"	1/4"	Rockwell B80	1 3/4"	—	Zinc Yellow-Chromate Plated	Pivoting	90546A240	000000


				Black-Painted Carbon Steel with Cotter Pin







								1 1/4" Diameter

								8 1/2"	-0.003" to 0.002"	17/64"	Rockwell C32	2 3/8"	Red	Plastic Coated	Fixed	90546A380	00000