Rounded Dowel Pins | McMaster-Carr

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30 Products

Shaft Type

Grooved

Tighter fit than plain shafts to resist pulling

18 products

Barbed

Permanently join plastics and soft metals such as aluminum

12 products

For Use With

Soft Materials

Barbs join plastic and soft metals like aluminum

12 products

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

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.

		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

Barbed Dowel Pins with Rounded Head

Often used in place of rivets, these pins create a finished look while securing plastics and soft metals such as aluminum. The sharp points bite into parts for a permanent hold. Also known as Barb-Lok™ pins.

Steel

				Head
	Lg.	Double Shear Breaking Strength	Min. Hardness	Dia.	Ht.		Each
Zinc-Plated Carbon Steel







				7/64" Diameter

				5/16"	Not Rated	Not Rated	0.211"	0.087"	000000000	00000


				3/8"	Not Rated	Not Rated	0.211"	0.087"	000000000	0000
				1/2"	Not Rated	Not Rated	0.211"	0.087"	000000000	0000




						1/8" Diameter

						3/8"	Not Rated	Not Rated	0.26"	0.103"	000000000	0000


						1/2"	Not Rated	Not Rated	0.26"	0.103"	000000000	0000
						3/4"	Not Rated	Not Rated	0.26"	0.103"	000000000	0000




								9/64" Diameter

								3/8"	Not Rated	Not Rated	0.309"	0.119"	000000000	0000


								1/2"	Not Rated	Not Rated	0.309"	0.119"	000000000	0000
								3/4"	Not Rated	Not Rated	0.309"	0.119"	000000000	0000




										11/64" Diameter

										1/2"	Not Rated	Not Rated	0.359"	0.136"	000000000	0000


										3/4"	Not Rated	Not Rated	0.359"	0.136"	000000000	0000
										1"	Not Rated	Not Rated	0.359"	0.136"	000000000	0000