5/64" 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







	5/64" Diameter

	1/8"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	5	98381A129	000000


	5/32"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	5	98381A130	00000
	3/16"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A010	0000
	7/32"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	5	98381A131	00000
	1/4"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A011	0000
	5/16"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	5	98381A132	00000
	3/8"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A013	0000
	7/16"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	Material Certificate	5	98381A150	00000
	1/2"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A015	0000
	5/8"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	5	98381A164	0000
	3/4"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A018	0000


	7/8"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A166	0000
	1"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A019	0000
	1 1/2"	0.0001" to 0.0003"	Not Rated	Rockwell C50	ASME B18.8.2	—	1	98381A168	0000

Corrosion-Resistant Stainless Steel About Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments. In addition to resisting rust, these pins also withstand mild chemicals such as cleaners and degreasers. They are strong enough to join most components but won't withstand extreme 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 join most components but won't withstand stress and vibration as well as 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.

	Dia. Tolerance	Double Shear Breaking Strength	Min. Hardness	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







			5/64" Diameter

			3/32"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A236	00000


			1/8"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A270	0000
			5/32"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A281	00000
			3/16"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A286	00000
			7/32"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A289	00000
			1/4"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	90145A294	00000
			5/16"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	90145A299	00000
			3/8"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	90145A300	00000
			7/16"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A308	00000
			1/2"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	90145A319	00000
			5/8"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A321	00000


			3/4"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A329	00000
			7/8"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A331	00000
			1"	0" to 0.0002"	Not Rated	Not Rated	—	5	90145A333	00000
			1 1/2"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	1	90145A338	0000


			Highly Corrosion-Resistant 316 Stainless Steel







							5/64" Diameter

							3/32"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A276	0000


							1/8"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A277	0000
							5/32"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A278	0000
							3/16"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A289	0000
							7/32"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A290	00000
							1/4"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A291	00000
							5/16"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	97395A294	00000
							3/8"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	97395A297	00000
							7/16"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A298	00000
							1/2"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A303	00000
							5/8"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A311	00000


							3/4"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A312	00000
							7/8"	0" to 0.0002"	Not Rated	Not Rated	—	5	97395A323	00000
							1"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	97395A327	00000
							1 1/2"	0" to 0.0002"	Not Rated	Not Rated	Material Certificate	5	97395A329	00000


							High-Strength Machinable 416 Stainless Steel







	5/64" Diameter

	3/32"	0.0001" to 0.0003"							Not Rated	Rockwell C36	Material Certificate	5	98380A274	00000


	1/8"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A300	0000
	3/16"	0.0001" to 0.0003"							Not Rated	Rockwell C36	Material Certificate	5	98380A313	0000
	7/32"	0.0001" to 0.0003"							Not Rated	Rockwell C36	Material Certificate	5	98380A325	0000
	1/4"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A331	00000
	5/16"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A344	00000
	3/8"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A349	00000
	7/16"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A352	00000
	1/2"	0.0001" to 0.0003"							700 lbf	Rockwell C36	—	5	98380A429	0000
	5/8"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A367	00000
	3/4"	0.0001" to 0.0003"							Not Rated	Rockwell C36	—	5	98380A372	00000


	7/8"	0.0001" to 0.0003"							Not Rated	Rockwell C36	Material Certificate	5	98380A374	00000
	1"	0.0001" to 0.0003"							700 lbf	Rockwell C36	—	5	98380A431	00000

Slotted Spring Pins


	End View

Squeeze these pins into holes and they expand slightly, creating tension to hold parts in place. They are often used as hinge pins and as fasteners for springs and power transmission components. An alternative to dowel pins, they're lighter in weight with a hollow center and don’t need a precise hole. Also known as roll pins.

Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.

Zinc-Plated Spring 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.

Corrosion-Resistant 18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.

Wear-Resistant 400 Series Stainless Steel—Our most wear-resistant stainless steel pins, these are good for pivoting parts that create a lot of friction. They hold up in environments that experience occasional moisture, but they're not as corrosion resistant as 18-8 and 316 stainless steel.

	For Hole Dia.	Wall Thk.	Double Shear Breaking Strength, lbf	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Spring Steel







			5/64" Diameter

			3/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A119	000000


			1/4"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A121	00000
			5/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A122	00000
			3/8"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A123	0000
			7/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A124	00000
			1/2"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A125	00000
			9/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A126	00000
			5/8"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A127	00000
			11/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A128	00000
			3/4"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A129	00000
			13/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A130	00000


			7/8"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A131	00000
			1"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A133	00000
			1 1/4"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A143	00000
			1 1/2"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	98296A149	00000


			Zinc-Plated Spring Steel







							5/64" Diameter

							3/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A100	00000


							1/4"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A101	00000
							5/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A102	00000
							3/8"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A103	00000
							7/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A104	00000
							1/2"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A905	00000
							9/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A906	00000
							5/8"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A907	00000
							11/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A908	00000
							3/4"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A909	00000
							13/16"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A910	00000


							7/8"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A911	00000
							1"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A913	00000
							1 1/4"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A915	00000
							1 1/2"	0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	250	90692A117	00000


							Corrosion-Resistant 18-8 Stainless Steel







	5/64" Diameter

	3/16"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A117	0000


	1/4"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A118	0000
	5/16"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A120	0000
	3/8"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A122	0000
	7/16"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A124	0000
	1/2"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A126	0000
	9/16"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A027	00000
	11/16"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A129	00000
	3/4"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A130	00000
	13/16"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A029	00000
	7/8"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A131	00000


	1 1/4"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A133	00000
	1 1/2"	0.078" to 0.081"							0.018"	450	Not Rated	ASME B18.8.2	100	92373A134	00000


	Wear-Resistant 400 Series Stainless Steel







				5/64" Diameter

				3/16"						0.078" to 0.081"	0.018"	800	Rockwell C43	ASME B18.8.2	100	92383A149	00000


				1/4"	0.078" to 0.081"					0.018"	800	Rockwell C43	ASME B18.8.2	100	92383A151	00000
				5/16"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A152	00000
				3/8"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A153	00000
				7/16"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A154	00000
				1/2"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A155	00000
				9/16"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	50	92383A156	00000
				5/8"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A157	00000
				11/16"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A161	00000
				3/4"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	50	92383A159	00000
				13/16"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	50	92383A162	00000


				7/8"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A160	00000
				1"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	50	92383A163	00000
				1 1/4"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	100	92383A165	00000
				1 1/2"	0.078" to 0.081"	0.018"				800	Rockwell C43	ASME B18.8.2	50	92383A167	00000

Core Pins

Mold plastic around these pins to form small holes, or use them to perforate parts. They have a flat head to fit into a counterbored hole. Pins can be machined to fit your application. They're precision-ground to tight tolerances.

M2 High-Speed Tool Steel About M2 High-Speed Tool Steel

M2 high-speed tool steel pins resist wear and stay sharp at high temperatures.

			Head				Each
	Dia.	Dia. Tolerance	Dia.	Ht.	Min. Hardness		1-9	10-99	100-Up
2 1/2" Long



		5/64"	0" to 0.0002"	1/8"	3/32"	Rockwell C60	98378A922	00000	00000	00000


		4" Long



				5/64"	0" to 0.0003"	1/8"	3/32"	Rockwell C60	98378A047	00000	00000	00000


				6" Long



						5/64"	0" to 0.0003"	1/8"	3/32"	Rockwell C60	98378A957	00000	00000	00000

Coiled Spring Pins

End View

The best spring pins for joining parts exposed to vibration and shock. They're often used in power transmission, automation, and other assemblies with constant motion and sudden starts and stops. Because of their spiral shape, they flex to conform to holes that aren’t perfectly round.

Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.

	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Spring Steel







	5/64" Diameter

	5/16"	0.077" to 0.081"	550	Rockwell C42	ASME B18.8.2	100	91598A632	00000


	3/8"	0.077" to 0.081"	550	Rockwell C42	ASME B18.8.2	100	91598A633	00000
	1/2"	0.077" to 0.081"	550	Rockwell C42	ASME B18.8.2	100	91598A634	00000
	5/8"	0.077" to 0.081"	550	Rockwell C42	ASME B18.8.2	100	91598A635	00000
	3/4"	0.077" to 0.081"	550	Rockwell C42	ASME B18.8.2	100	91598A636	0000
	1"	0.077" to 0.081"	550	Rockwell C42	ASME B18.8.2	100	91598A637	00000


	Wear-Resistant 400 Series Stainless Steel







					5/64" Diameter

					5/16"	0.077" to 0.081"	550	Rockwell C46	ASME B18.8.2	50	93740A622	00000


					3/8"	0.077" to 0.081"	550	Rockwell C46	ASME B18.8.2	50	93740A623	00000
					1/2"	0.077" to 0.081"	550	Rockwell C46	ASME B18.8.2	50	93740A624	00000
					5/8"	0.077" to 0.081"	550	Rockwell C46	ASME B18.8.2	50	93740A625	00000
					3/4"	0.077" to 0.081"	550	Rockwell C46	ASME B18.8.2	50	93740A626	00000
					1"	0.077" to 0.081"	550	Rockwell C46	ASME B18.8.2	50	93740A627	00000

Ejector Pins

Also known as knockout and forged pins, use these pins to push parts out of molds. Pins are precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended. Metric pins meet DIN 1530 specifications.

Nitride-Coated H13 Tool Steel

H13 tool steel pins resist rapid changes in temperature.

		Head
Dia.	Dia. Tolerance	Dia.	Ht.	Min. Hardness		Each







			6" Long

			5/64"	-0.0008" to -0.0005"	1/4"	1/8"	Rockwell C41	93772A538	00000




					10" Long

					5/64"	-0.0008" to -0.0005"	1/4"	1/8"	Rockwell C41	93772A547	0000

Shoulder-Style Ejector Pins

A thick shoulder underneath the head makes these pins more rigid than standard ejector pins. Also known as knockout and forged pins, use them to push parts out of molds. They're precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended.

Pins are made of H13 tool steel to resist rapid changes in temperature.

Nitride-Coated H13 Tool Steel

				Head
	Dia.	Dia. Tolerance	Shoulder Dia.	Dia.	Ht.	Min. Hardness		Each
1/2" Long Shoulder







				6" Long

				5/64"	-0.0008" to -0.0005"	1/8"	1/4"	1/8"	Rockwell C41	93779A144	00000




						10" Long

						5/64"	-0.0008" to -0.0005"	1/8"	1/4"	1/8"	Rockwell C41	93779A252	0000


						2" Long Shoulder







										6" Long

										5/64"	-0.0008" to -0.0005"	1/8"	1/4"	1/8"	Rockwell C41	93779A146	0000




												10" Long

												5/64"	-0.0008" to -0.0005"	1/8"	1/4"	1/8"	Rockwell C41	93779A353	0000


												3" Long Shoulder







																10" Long

																5/64"	-0.0008" to -0.0005"	1/8"	1/4"	1/8"	Rockwell C41	93779A107	0000


																4" Long Shoulder







																				10" Long

																				5/64"	-0.0008" to -0.0005"	1/8"	1/4"	1/8"	Rockwell C41	93779A108	0000

Flush Mount-Head Core Pins

A 60° beveled head fits into a countersunk hole. Mold plastic around these pins to form small holes, or use them to perforate parts. Also known as perforator, mold, forged, quill, and pilot pins, they can be machined to fit your application. Pins are precision-ground to tight tolerances.

M2 High-Speed Tool Steel About M2 High-Speed Tool Steel

M2 high-speed tool steel pins resist wear and stay sharp at high temperatures.

			Head
	Dia.	Dia. Tolerance	Dia.	Ht.	Min. Hardness	Countersink Angle		Each
2 1/2" Long



		5/64"	0" to 0.0003"	0.141"	0.055"	Rockwell C60	60°	93757A453	00000


		6" Long



				5/64"	0" to 0.0003"	0.141"	0.055"	Rockwell C60	60°	93757A953	00000

Through-Hardened Ejector Pins

Compared to standard ejector pins, these pins are less likely to chip and crack when used to push steel parts out of molds because they've been hardened through their core. However, they cannot be drilled or tapped and are more brittle than standard ejector pins. They're also known as knockout and forged pins. Made of H13 tool steel, they resist rapid changes in temperature. They’re precision ground to tight tolerances.

Nitride-Coated H13 Tool Steel

		Head
Dia.	Dia. Tolerance	Dia.	Ht.	Min. Hardness		Each







			6" Long

			5/64"	-0.0008" to -0.0005"	1/4"	1/8"	Rockwell C50	4433N103	00000