Grooved Dowel Pins | McMaster-Carr

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199 Products

Performance

Corrosion Resistant

Resist rust in wet and outdoor environments

19 products

For Use With

Pivoting Parts

The smooth portion acts as a pivot for moving parts

106 products

For Use With

Extension Springs

Slip a spring into the notch to create tension between components

20 products

Fastener Head Type

Rounded

Create a finished appearance

18 products

Partially Grooved Dowel Pins

The grooved section secures these pins while the smooth portion is free to act as a pivot or hinge. The grooves pinch shut when installed, creating tension to lock in place. They fit tighter than standard dowel pins and resist pulling from movement and vibration, even in imperfect holes.

For the best fit, drill your hole slightly larger than the nominal diameter shown.

Half Grooved


Parallel Groove	Tapered Groove

Reverse-Tapered Groove

The most versatile partially grooved pins, these are used in a range of applications, including as rod end linkages, stop pins, and locators. Also known as type H pins.

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.

Parallel Groove—Fit tighter than pins with tapered grooves to stay in place under severe vibration. However, they require more force to insert.

Tapered Groove—Easier to install than pins with parallel grooves but less secure in high-vibration applications.

Reverse-Tapered Groove—With grooves that narrow toward the end, these pins are the best for securing a stop or handle in a blind hole. They’re easier to insert than pins with parallel grooves but are less secure in high-vibration applications.

		Nominal		Max.
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength, lbf	Min. Hardness	Groove Lg.	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				3/32" Diameter

				1/4"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/8"	—	25	000000000	000000


				1/2"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/4"	—	25	000000000	00000




						1/8" Diameter

						1/2"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/4"	—	25	000000000	00000


						3/4"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	3/8"	—	25	000000000	00000
						1"	0.125"	-0.002" to 0"	0.133"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/2"	—	25	000000000	00000




								5/32" Diameter

								1/2"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/4"	—	25	000000000	00000


								3/4"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	3/8"	—	25	000000000	00000
								1"	0.156"	-0.002" to 0"	0.165"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/2"	—	25	000000000	00000




										3/16" Diameter

										1/2"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/4"	—	25	000000000	00000


										3/4"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/8"	—	25	000000000	00000
										1"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/2"	—	10	000000000	0000
										1 1/2"	0.188"	-0.002" to 0"	0.197"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/4"	—	10	000000000	00000




												1/4" Diameter

												3/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/8"	—	25	000000000	00000


												1"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	1/2"	—	25	000000000	00000
												1 1/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	5/8"	—	10	000000000	0000
												1 1/2"	0.25"	-0.002" to 0"	0.262"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/4"	—	10	000000000	00000




														5/16" Diameter

3/4"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	3/8"	—	10	000000000	0000


1"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	1/2"	—	10	000000000	0000
1 1/4"	0.313"	-0.002" to 0"												0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	5/8"	—	10	000000000	0000




		3/8" Diameter

		1"	0.375"											-0.002" to 0"	0.394"	-0.003" to 0.003"	Parallel	11,000	Not Rated	1/2"	—	10	000000000	00000




				2 mm Diameter

				8 mm	2 mm									-0.025 mm to 0 mm	2.1 mm	0 mm to 0.05 mm	Reverse Tapered	600	Rockwell B68	4 mm	ISO 8741	10	000000000	0000


				10 mm	2 mm									-0.025 mm to 0 mm	2.2 mm	0 mm to 0.05 mm	Tapered	600	Rockwell B68	5 mm	ISO 8745	10	000000000	0000
				14 mm	2 mm									-0.025 mm to 0 mm	2.2 mm	0 mm to 0.05 mm	Tapered	600	Rockwell B68	7 mm	ISO 8745	10	000000000	0000




						2.5 mm Diameter

						6 mm	2.5 mm							-0.025 mm to 0 mm	2.7 mm	-0.05 mm to 0.05 mm	Tapered	950	Rockwell B68	3 mm	ISO 8745	10	000000000	0000


						10 mm	2.5 mm							-0.025 mm to 0 mm	2.7 mm	-0.05 mm to 0.05 mm	Tapered	950	Rockwell B68	5 mm	ISO 8745	10	000000000	0000
						14 mm	2.5 mm							-0.025 mm to 0 mm	2.7 mm	-0.05 mm to 0.05 mm	Reverse Tapered	950	Rockwell B68	7 mm	ISO 8741	10	000000000	0000




														3 mm Diameter

								6 mm	3 mm					-0.025 mm to 0 mm	3.2 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	3 mm	ISO 8745	10	000000000	0000


								8 mm	3 mm					-0.025 mm to 0 mm	3.2 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	4 mm	ISO 8745	10	000000000	0000
								12 mm	3 mm					-0.025 mm to 0 mm	3.1 mm	-0.05 mm to 0.05 mm	Reverse Tapered	1,400	Rockwell B68	6 mm	ISO 8741	10	000000000	0000
								12 mm	3 mm					-0.025 mm to 0 mm	3.3 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	6 mm	ISO 8745	10	000000000	0000
								14 mm	3 mm					-0.025 mm to 0 mm	3.2 mm	-0.05 mm to 0.05 mm	Reverse Tapered	1,400	Rockwell B68	7 mm	ISO 8741	10	000000000	0000
								20 mm	3 mm					-0.025 mm to 0 mm	3.3 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	10 mm	ISO 8745	10	000000000	0000
								24 mm	3 mm					-0.025 mm to 0 mm	3.3 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	12 mm	ISO 8745	10	000000000	0000
								26 mm	3 mm					-0.025 mm to 0 mm	3.3 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	13 mm	ISO 8745	10	000000000	0000




										4 mm Diameter

										10 mm	4 mm			-0.075 mm to 0 mm	4.2 mm	-0.05 mm to 0.05 mm	Reverse Tapered	1,400	Rockwell B68	5 mm	ISO 8741	10	000000000	0000


										10 mm	4 mm			-0.075 mm to 0 mm	4.3 mm	-0.05 mm to 0.05 mm	Tapered	2,500	Rockwell B68	5 mm	ISO 8745	10	000000000	0000
										16 mm	4 mm			-0.075 mm to 0 mm	4.2 mm	-0.05 mm to 0.05 mm	Reverse Tapered	2,500	Rockwell B68	8 mm	ISO 8741	10	000000000	0000
										20 mm	4 mm			-0.075 mm to 0 mm	4.2 mm	-0.05 mm to 0.05 mm	Reverse Tapered	2,500	Rockwell B68	10 mm	ISO 8741	10	000000000	0000
										30 mm	4 mm			-0.075 mm to 0 mm	4.3 mm	-0.05 mm to 0.05 mm	Reverse Tapered	2,500	Rockwell B68	15 mm	ISO 8741	10	000000000	0000




												5 mm Diameter

												16 mm	5 mm	-0.075 mm to 0 mm	5.3 mm	-0.05 mm to 0.05 mm	Tapered	3,900	Rockwell B68	8 mm	ISO 8745	10	000000000	0000


18 mm	5 mm											-0.075 mm to 0 mm	5.3 mm	-0.05 mm to 0.05 mm	Tapered	3,900	Rockwell B68	9 mm	ISO 8745	10	000000000	00000
30 mm	5 mm											-0.075 mm to 0 mm	5.3 mm	-0.05 mm to 0.05 mm	Reverse Tapered	3,900	Rockwell B68	15 mm	ISO 8741	10	000000000	00000
30 mm	5 mm											-0.075 mm to 0 mm	5.4 mm	-0.05 mm to 0.05 mm	Tapered	3,900	Rockwell B68	15 mm	ISO 8745	10	000000000	00000




		6 mm Diameter

		12 mm	6 mm									-0.075 mm to 0 mm	6.3 mm	-0.05 mm to 0.05 mm	Tapered	5,700	Rockwell B68	6 mm	ISO 8745	10	000000000	00000


		14 mm	6 mm									-0.075 mm to 0 mm	6.2 mm	-0.05 mm to 0.05 mm	Reverse Tapered	5,700	Rockwell B68	7 mm	ISO 8741	10	000000000	00000
		16 mm	6 mm									-0.075 mm to 0 mm	6.2 mm	-0.05 mm to 0.05 mm	Reverse Tapered	5,700	Rockwell B68	8 mm	ISO 8741	10	000000000	00000
		20 mm	6 mm									-0.075 mm to 0 mm	6.3 mm	-0.05 mm to 0.05 mm	Tapered	5,700	Rockwell B68	10 mm	ISO 8745	10	000000000	00000
		26 mm	6 mm									-0.075 mm to 0 mm	6.4 mm	-0.05 mm to 0.05 mm	Tapered	5,700	Rockwell B68	13 mm	ISO 8745	10	000000000	00000
		30 mm	6 mm									-0.075 mm to 0 mm	6.4 mm	-0.05 mm to 0.05 mm	Tapered	5,700	Rockwell B68	15 mm	ISO 8745	10	000000000	00000
		40 mm	6 mm									-0.075 mm to 0 mm	6.4 mm	-0.05 mm to 0.05 mm	Tapered	5,700	Rockwell B68	20 mm	ISO 8745	10	000000000	00000




				8 mm Diameter

				16 mm	8 mm							-0.09 mm to 0 mm	8.3 mm	-0.05 mm to 0.05 mm	Tapered	10,100	Rockwell B68	8 mm	ISO 8745	5	000000000	00000

Center Grooved


	Parallel Groove

These pins lock in the middle, leaving two smooth ends free. They're often used to create a T-handle, such as on a valve stem to open and close it by hand. Also known as type E pins.

Parallel Groove—Fit tighter than pins with tapered grooves to stay in place under severe vibration. However, they require more force to insert.

		Nominal		Max.
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength, lbf	Min. Hardness	Groove Lg.	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				3/32" Diameter

				1/4"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/8"	—	25	000000000	000000


				1/2"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/4"	—	25	000000000	00000




						1/8" Diameter

						1/2"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/4"	—	25	000000000	00000


						3/4"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	3/8"	—	25	000000000	00000
						1"	0.125"	-0.002" to 0"	0.133"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/2"	—	25	000000000	00000




								5/32" Diameter

								1/2"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/4"	—	25	000000000	00000


								3/4"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	3/8"	—	25	000000000	00000
								1"	0.156"	-0.002" to 0"	0.165"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/2"	—	25	000000000	00000




										3/16" Diameter

										1/2"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/4"	—	25	000000000	00000


										3/4"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/8"	—	25	000000000	00000
										1"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/2"	—	10	000000000	0000
										1 1/2"	0.188"	-0.002" to 0"	0.197"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/4"	—	10	000000000	00000




												1/4" Diameter

												3/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/8"	—	25	000000000	00000


												1"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	1/2"	—	25	000000000	00000
												1 1/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	5/8"	—	10	000000000	0000
												1 1/2"	0.25"	-0.002" to 0"	0.262"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/4"	—	10	000000000	00000




														5/16" Diameter

3/4"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	3/8"	—	10	000000000	0000


1"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	1/2"	—	10	000000000	0000
1 1/4"	0.313"	-0.002" to 0"												0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	5/8"	—	10	000000000	0000




		3/8" Diameter

		1"	0.375"											-0.002" to 0"	0.394"	-0.003" to 0.003"	Parallel	11,000	Not Rated	1/2"	—	10	000000000	00000




				2 mm Diameter

				12 mm	2 mm									-0.025 mm to 0 mm	2.1 mm	0 mm to 0.05 mm	Parallel	600	Rockwell B68	4 mm	ISO 8742	10	00000000	0000




														2.5 mm Diameter

														24 mm	2.5 mm	-0.025 mm to 0 mm	2.65 mm	-0.05 mm to 0.05 mm	Parallel	950	Rockwell B68	8 mm	ISO 8742	10	00000000	0000




														3 mm Diameter

														12 mm	3 mm	-0.025 mm to 0 mm	3.1 mm	-0.05 mm to 0.05 mm	Parallel	1,400	Rockwell B68	4 mm	ISO 8742	10	00000000	0000


														14 mm	3 mm	-0.025 mm to 0 mm	3.1 mm	-0.05 mm to 0.05 mm	Parallel	1,400	Rockwell B68	4.66 mm	ISO 8742	10	00000000	0000
														16 mm	3 mm	-0.025 mm to 0 mm	3.1 mm	-0.05 mm to 0.05 mm	Parallel	1,400	Rockwell B68	5.33 mm	ISO 8742	10	00000000	0000
														22 mm	3 mm	-0.025 mm to 0 mm	3.15 mm	-0.05 mm to 0.05 mm	Parallel	1,400	Rockwell B68	7.33 mm	ISO 8742	10	00000000	0000
								24 mm						3 mm	-0.025 mm to 0 mm	3.15 mm	-0.05 mm to 0.05 mm	Parallel	1,400	Rockwell B68	8 mm	ISO 8742	10	00000000	0000




														4 mm Diameter

														16 mm	4 mm	-0.075 mm to 0 mm	4.15 mm	-0.05 mm to 0.05 mm	Parallel	2,500	Rockwell B68	5.33 mm	ISO 8742	10	00000000	0000


														18 mm	4 mm	-0.075 mm to 0 mm	4.15 mm	-0.05 mm to 0.05 mm	Parallel	2,500	Rockwell B68	6 mm	ISO 8742	10	00000000	0000
														24 mm	4 mm	-0.075 mm to 0 mm	4.2 mm	-0.05 mm to 0.05 mm	Parallel	2,500	Rockwell B68	8 mm	ISO 8742	10	00000000	0000




														5 mm Diameter

														22 mm	5 mm	-0.075 mm to 0 mm	5.2 mm	-0.05 mm to 0.05 mm	Parallel	3,950	Rockwell B68	7.33 mm	ISO 8742	10	00000000	00000


														26 mm	5 mm	-0.075 mm to 0 mm	5.2 mm	-0.05 mm to 0.05 mm	Parallel	3,950	Rockwell B68	8.66 mm	ISO 8742	10	00000000	00000
														32 mm	5 mm	-0.075 mm to 0 mm	5.25 mm	-0.05 mm to 0.05 mm	Parallel	3,950	Rockwell B68	10.66 mm	ISO 8742	10	00000000	00000




														6 mm Diameter

														28 mm	6 mm	-0.075 mm to 0 mm	6.25 mm	-0.05 mm to 0.05 mm	Parallel	5,700	Rockwell B68	9.33 mm	ISO 8742	10	00000000	00000




	8 mm Diameter

	32 mm														8 mm	-0.09 mm to 0 mm	8.25 mm	-0.05 mm to 0.05 mm	Parallel	10,150	Rockwell B68	10.66 mm	ISO 8742	5	00000000	00000

Quarter Grooved


	Parallel Groove

With a longer smooth end than half-grooved dowel pins, these are often used for thicker pivoting parts, such as levers and hinges. Also known as type C pins.

Parallel Groove—Fit tighter than pins with tapered grooves to stay in place under severe vibration. However, they require more force to insert.

		Nominal		Max.
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength, lbf	Min. Hardness	Groove Lg.	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				3/32" Diameter

				1/4"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/16"	25	000000000	000000


				1/2"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/8"	25	000000000	00000




						1/8" Diameter

						1/2"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/8"	25	000000000	00000


						3/4"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	3/16"	25	000000000	00000
						1"	0.125"	-0.002" to 0"	0.133"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/4"	25	000000000	00000




								5/32" Diameter

								1/2"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/8"	25	000000000	00000


								3/4"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	3/16"	25	000000000	00000
								1"	0.156"	-0.002" to 0"	0.165"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/4"	25	000000000	00000




										3/16" Diameter

										1/2"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/8"	25	000000000	00000


										3/4"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/16"	25	000000000	00000
										1"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/4"	10	000000000	0000
										1 1/2"	0.188"	-0.002" to 0"	0.197"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/8"	10	000000000	00000




												1/4" Diameter

												3/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/16"	25	000000000	00000


												1"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	1/4"	25	000000000	00000
												1 1/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	5/16"	10	000000000	0000
												1 1/2"	0.25"	-0.002" to 0"	0.262"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/8"	10	000000000	00000




														5/16" Diameter

3/4"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	3/16"	10	000000000	0000


1"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	1/4"	10	000000000	0000
1 1/4"	0.313"	-0.002" to 0"												0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	5/16"	10	000000000	0000




		3/8" Diameter

		1"	0.375"											-0.002" to 0"	0.394"	-0.003" to 0.003"	Parallel	11,000	Not Rated	1/4"	10	000000000	00000

Fully Grooved Dowel Pins

With a tighter fit than standard dowel pins, these resist pulling from movement and vibration, even in imperfect holes. Three grooves pinch shut when installed, creating tension to lock in place. Also known as Type A pins.

For the best fit, drill your hole slightly larger than the nominal diameter shown.

Steel


Parallel Groove	Tapered Groove

Parallel Groove—Fit tighter than pins with tapered grooves to stay in place under severe vibration. However, they require more force to insert.

Tapered Groove—Easier to install than pins with parallel grooves but less secure in high-vibration applications.

		Nominal		Max.
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength, lbf	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				3/32" Diameter

				1/4"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Tapered	850	Not Rated	—	25	000000000	000000


				1/2"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Tapered	850	Not Rated	—	25	000000000	00000




						1/8" Diameter

						1/2"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Tapered	1,600	Not Rated	—	25	000000000	00000


						3/4"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Tapered	1,600	Not Rated	—	25	000000000	00000
						1"	0.125"	-0.002" to 0"	0.133"	-0.003" to 0.003"	Tapered	1,600	Not Rated	—	25	000000000	00000




								5/32" Diameter

								1/2"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Tapered	2,300	Not Rated	—	25	000000000	00000


								3/4"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Tapered	2,300	Not Rated	—	25	000000000	00000
								1"	0.156"	-0.002" to 0"	0.165"	-0.003" to 0.003"	Tapered	2,300	Not Rated	—	25	000000000	00000




										3/16" Diameter

										1/2"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Tapered	3,300	Not Rated	—	25	000000000	00000


										3/4"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Tapered	3,300	Not Rated	—	25	000000000	00000
										1"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Tapered	3,300	Not Rated	—	10	000000000	0000
										1 1/2"	0.188"	-0.002" to 0"	0.197"	-0.003" to 0.003"	Tapered	3,300	Not Rated	—	10	000000000	00000




												1/4" Diameter

												3/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Tapered	5,800	Not Rated	—	25	000000000	00000


												1"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Tapered	5,800	Not Rated	—	25	000000000	00000
												1 1/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Tapered	5,800	Not Rated	—	10	000000000	0000
												1 1/2"	0.25"	-0.002" to 0"	0.262"	-0.003" to 0.003"	Tapered	5,800	Not Rated	—	10	000000000	00000




														5/16" Diameter

3/4"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Tapered	7,600	Not Rated	—	10	000000000	0000


1"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Tapered	7,600	Not Rated	—	10	000000000	0000
1 1/4"	0.313"	-0.002" to 0"												0.329"	-0.003" to 0.003"	Tapered	7,600	Not Rated	—	10	000000000	0000




		3/8" Diameter

		1"	0.375"											-0.002" to 0"	0.394"	-0.003" to 0.003"	Tapered	11,000	Not Rated	—	10	000000000	00000




				2 mm Diameter

				14 mm	2 mm									-0.025 mm to 0 mm	2.15 mm	0 mm to 0.05 mm	Parallel	600	Rockwell B68	ISO 8740	10	00000000	0000


				14 mm	2 mm									-0.025 mm to 0 mm	2.15 mm	0 mm to 0.05 mm	Tapered	600	Rockwell B68	ISO 8744	10	00000000	0000
				16 mm	2 mm									-0.025 mm to 0 mm	2.15 mm	0 mm to 0.05 mm	Parallel	600	Rockwell B68	ISO 8740	10	00000000	0000




						2.5 mm Diameter

						12 mm	2.5 mm							-0.025 mm to 0 mm	2.7 mm	-0.05 mm to 0.05 mm	Tapered	950	Rockwell B68	ISO 8744	10	00000000	0000


						18 mm	2.5 mm							-0.025 mm to 0 mm	2.65 mm	-0.05 mm to 0.05 mm	Tapered	950	Rockwell B68	ISO 8744	10	00000000	0000
						20 mm	2.5 mm							-0.025 mm to 0 mm	2.65 mm	-0.05 mm to 0.05 mm	Tapered	950	Rockwell B68	ISO 8744	10	00000000	0000




														3 mm Diameter

								12 mm	3 mm					-0.025 mm to 0 mm	3.2 mm	-0.05 mm to 0.05 mm	Parallel	1,400	Rockwell B68	ISO 8740	10	00000000	0000


								12 mm	3 mm					-0.025 mm to 0 mm	3.3 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	ISO 8744	10	00000000	0000




														4 mm Diameter

														10 mm	4 mm	-0.075 mm to 0 mm	4.3 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	ISO 8744	10	00000000	0000


										18 mm	4 mm			-0.075 mm to 0 mm	4.35 mm	-0.05 mm to 0.05 mm	Tapered	1,400	Rockwell B68	ISO 8744	10	00000000	0000
										20 mm	4 mm			-0.075 mm to 0 mm	4.25 mm	-0.05 mm to 0.05 mm	Parallel	2,500	Rockwell B68	ISO 8740	10	00000000	0000
										26 mm	4 mm			-0.075 mm to 0 mm	4.25 mm	-0.05 mm to 0.05 mm	Parallel	2,500	Rockwell B68	ISO 8740	10	00000000	0000
										30 mm	4 mm			-0.075 mm to 0 mm	4.25 mm	-0.05 mm to 0.05 mm	Parallel	2,500	Rockwell B68	ISO 8740	10	00000000	0000




														5 mm Diameter

												16 mm		5 mm	-0.075 mm to 0 mm	5.25 mm	-0.05 mm to 0.05 mm	Parallel	3,900	Rockwell B68	ISO 8740	10	00000000	0000


												45 mm	5 mm	-0.075 mm to 0 mm	5.25 mm	-0.05 mm to 0.05 mm	Tapered	3,900	Rockwell B68	ISO 8744	10	00000000	00000




6 mm Diameter

20 mm	6 mm													-0.075 mm to 0 mm	6.3 mm	-0.05 mm to 0.05 mm	Parallel	5,700	Rockwell B68	ISO 8740	10	00000000	00000

Corrosion-Resistant Stainless Steel

Tapered Groove

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.

Tapered Groove—Easier to install than pins with parallel grooves but less secure in high-vibration applications.

		Nominal		Max.
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength	Min. Hardness	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				3/32" Diameter

				1/4"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000


				1/2"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000




						1/8" Diameter

						1/2"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000


						3/4"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000
						1"	0.125"	-0.002" to 0"	0.133"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000




								5/32" Diameter

								1/2"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000


								3/4"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000
								1"	0.156"	-0.002" to 0"	0.165"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000




										3/16" Diameter

										1/2"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000


										3/4"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000
										1"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	10	000000000	00000
										1 1/2"	0.188"	-0.002" to 0"	0.197"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	0000




												1/4" Diameter

												3/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	0000


												1"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000
												1 1/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000
												1 1/2"	0.25"	-0.002" to 0"	0.262"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000




														5/16" Diameter

1"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000


1 1/4"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	00000




		3/8" Diameter

		1"	0.375"											-0.002" to 0"	0.394"	-0.003" to 0.003"	Tapered	Not Rated	Not Rated	5	000000000	0000

Fully Grooved Dowel Pins with Rounded Head

The domed head creates a finished appearance, so these pins are often used to attach brackets, knobs, and machine plates. The grooves pinch shut when you press pins into a hole, creating tension to lock them in place.

For the best fit, drill your hole slightly larger than the nominal diameter shown.

Steel

Parallel Groove—Fit tighter than pins with tapered grooves to stay in place under severe vibration. However, they require more force to insert.

		Nominal		Max.					Head
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength	Min. Hardness	Dia.	Ht.	Specs. Met		Each
Zinc-Plated Carbon Steel



		1/4"	0.086"	-0.002" to 0"	0.096"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.154"	0.065"	ASME B18.8.2	000000000	00000


		1/4"	0.104"	-0.002" to 0"	0.113"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.202"	0.08"	ASME B18.8.2	000000000	0000
		3/8"	0.086"	-0.002" to 0"	0.096"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.154"	0.065"	ASME B18.8.2	000000000	0000
		3/8"	0.104"	-0.002" to 0"	0.113"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.202"	0.08"	ASME B18.8.2	000000000	0000
		3/8"	0.12"	-0.002" to 0"	0.13"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.25"	0.097"	ASME B18.8.2	000000000	0000
		3/8"	0.144"	-0.002" to 0"	0.153"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.298"	0.113"	ASME B18.8.2	000000000	0000
		1/2"	0.086"	-0.002" to 0"	0.096"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.154"	0.065"	ASME B18.8.2	000000000	0000
		1/2"	0.104"	-0.002" to 0"	0.113"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.202"	0.08"	ASME B18.8.2	000000000	0000
		1/2"	0.12"	-0.002" to 0"	0.13"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.25"	0.097"	ASME B18.8.2	000000000	0000
		1/2"	0.144"	-0.002" to 0"	0.155"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.298"	0.113"	ASME B18.8.2	000000000	0000
		1/2"	0.161"	-0.002" to 0"	0.171"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.347"	0.13"	ASME B18.8.2	000000000	0000


		1/2"	0.196"	-0.002" to 0"	0.206"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.395"	0.146"	ASME B18.8.2	000000000	0000
		5/8"	0.12"	-0.002" to 0"	0.13"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.25"	0.097"	ASME B18.8.2	000000000	0000
		5/8"	0.144"	-0.002" to 0"	0.155"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.298"	0.113"	ASME B18.8.2	000000000	0000
		3/4"	0.161"	-0.002" to 0"	0.171"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.347"	0.13"	ASME B18.8.2	000000000	0000
		3/4"	0.196"	-0.002" to 0"	0.201"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.395"	0.146"	ASME B18.8.2	000000000	0000
		1"	0.161"	-0.002" to 0"	0.171"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.347"	0.13"	ASME B18.8.2	000000000	0000
		1"	0.196"	-0.002" to 0"	0.201"	-0.002" to 0.002"	Parallel	Not Rated	Not Rated	0.395"	0.146"	ASME B18.8.2	000000000	0000

Partially Grooved Dowel Pins with Notch

Slip a spring into the notch at the end of the pin. Often used in automated machinery such as conveyors and robotic arms, the pin anchors the spring in place to create tension between components. The grooved section pinches shut when installed to lock the pin in place. Grooved pins have a tighter fit than standard dowel pins and resist pulling from movement and vibration.

For the best fit, drill your hole slightly larger than the nominal diameter shown.

Half Grooved

Also known as type G pins.

Parallel Groove—Fit tighter than pins with tapered grooves to stay in place under severe vibration. However, they require more force to insert.

		Nominal		Max.
	Lg.	Dia.	Dia. Tolerance	Dia.	Dia. Tolerance	Groove Type	Double Shear Breaking Strength, lbf	Min. Hardness	Groove Lg.	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				3/32" Diameter

				1/4"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/8"	25	000000000	000000


				1/2"	0.094"	-0.002" to 0"	0.101"	-0.003" to 0.003"	Parallel	850	Not Rated	1/4"	25	000000000	00000




						1/8" Diameter

						1/2"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/4"	25	000000000	00000


						3/4"	0.125"	-0.002" to 0"	0.134"	-0.003" to 0.003"	Parallel	1,600	Not Rated	3/8"	25	000000000	00000
						1"	0.125"	-0.002" to 0"	0.133"	-0.003" to 0.003"	Parallel	1,600	Not Rated	1/2"	25	000000000	00000




								5/32" Diameter

								1/2"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/4"	25	000000000	00000


								3/4"	0.156"	-0.002" to 0"	0.166"	-0.003" to 0.003"	Parallel	2,300	Not Rated	3/8"	25	000000000	00000
								1"	0.156"	-0.002" to 0"	0.165"	-0.003" to 0.003"	Parallel	2,300	Not Rated	1/2"	25	000000000	00000




										3/16" Diameter

										1/2"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/4"	25	000000000	00000


										3/4"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/8"	25	000000000	00000
										1"	0.188"	-0.002" to 0"	0.198"	-0.003" to 0.003"	Parallel	3,300	Not Rated	1/2"	10	000000000	0000
										1 1/2"	0.188"	-0.002" to 0"	0.197"	-0.003" to 0.003"	Parallel	3,300	Not Rated	3/4"	10	000000000	00000




												1/4" Diameter

												3/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/8"	25	000000000	00000


												1"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	1/2"	25	000000000	00000
												1 1/4"	0.25"	-0.002" to 0"	0.263"	-0.003" to 0.003"	Parallel	5,800	Not Rated	5/8"	10	000000000	0000
												1 1/2"	0.25"	-0.002" to 0"	0.262"	-0.003" to 0.003"	Parallel	5,800	Not Rated	3/4"	10	000000000	00000




														5/16" Diameter

3/4"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	3/8"	10	000000000	0000


1"	0.313"													-0.002" to 0"	0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	1/2"	10	000000000	0000
1 1/4"	0.313"	-0.002" to 0"												0.329"	-0.003" to 0.003"	Parallel	7,600	Not Rated	5/8"	10	000000000	0000




		3/8" Diameter

		1"	0.375"											-0.002" to 0"	0.394"	-0.003" to 0.003"	Parallel	11,000	Not Rated	1/2"	10	000000000	00000