Spiral Dowel Pins | McMaster-Carr

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85 Products

Vented Pull-Out Dowel Pins

Insert and remove from blind holes with less effort than pins that aren't vented. The vent relieves trapped air, so pressure doesn't create resistance as you install the pin. Because they have a tapped end, you can thread in a screw and pull the pin out with a removal tool (sold separately). You can also pull using pliers, but there’s more risk of damaging the hole.

Spiral Shaft

For a more secure hold under vibration than flat-shaft pins, the spiral makes 360° contact with the hole.

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.

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.

	Lg.	Dia. Tolerance	Thread Size	Double Shear Breaking Strength, lbf	Min. Hardness	Specs. Met		Each
High-Strength Alloy Steel







				1/4" Diameter

				3/4"	0.0001" to 0.0003"	8-32	6,400	Rockwell C47	ASME B18.8.2	000000000	00000


				1"	0.0001" to 0.0003"	8-32	6,400	Rockwell C47	ASME B18.8.2	000000000	0000
				1 1/4"	0.0001" to 0.0003"	8-32	6,400	Rockwell C47	ASME B18.8.2	000000000	0000
				1 1/2"	0.0001" to 0.0003"	8-32	6,400	Rockwell C47	ASME B18.8.2	000000000	0000
				2"	0.0001" to 0.0003"	8-32	6,400	Rockwell C47	ASME B18.8.2	000000000	0000
				2 1/2"	0.0001" to 0.0003"	8-32	6,400	Rockwell C47	ASME B18.8.2	000000000	0000




						5/16" Diameter

						3/4"	0.0001" to 0.0003"	10-32	10,000	Rockwell C47	ASME B18.8.2	000000000	0000


						1"	0.0001" to 0.0003"	10-32	10,000	Rockwell C47	ASME B18.8.2	000000000	0000
						1 1/4"	0.0001" to 0.0003"	10-32	10,000	Rockwell C47	ASME B18.8.2	000000000	0000
						1 1/2"	0.0001" to 0.0003"	10-32	10,000	Rockwell C47	ASME B18.8.2	000000000	0000
						2"	0.0001" to 0.0003"	10-32	10,000	Rockwell C47	ASME B18.8.2	000000000	0000
						2 1/2"	0.0001" to 0.0003"	10-32	10,000	Rockwell C47	ASME B18.8.2	000000000	0000




								3/8" Diameter

								1"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000


								1 1/4"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000
								1 1/2"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000
								1 3/4"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000
								2"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000
								2 1/4"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000
								2 1/2"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000
								3"	0.0001" to 0.0003"	10-32	14,300	Rockwell C47	ASME B18.8.2	000000000	0000




										1/2" Diameter

										1"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000


										1 1/4"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										1 1/2"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										1 3/4"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										2"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										2 1/4"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										2 1/2"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										3"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000
										3 1/2"	0.0001" to 0.0003"	1/4"-20	25,500	Rockwell C47	ASME B18.8.2	000000000	0000




										5/8" Diameter

		1 1/2"	0.0001" to 0.0003"							1/4"-20	39,000	Rockwell C47	ASME B18.8.2	000000000	0000


		2"	0.0001" to 0.0003"							1/4"-20	39,000	Rockwell C47	ASME B18.8.2	000000000	0000
		2 1/4"	0.0001" to 0.0003"							1/4"-20	39,000	Rockwell C47	ASME B18.8.2	000000000	0000
		2 1/2"	0.0001" to 0.0003"							1/4"-20	39,000	Rockwell C47	ASME B18.8.2	000000000	00000
		3"	0.0001" to 0.0003"							1/4"-20	39,000	Rockwell C47	ASME B18.8.2	000000000	00000




										3/4" Diameter

				2"						0.0001" to 0.0003"	5/16"-18	57,000	Rockwell C47	ASME B18.8.2	000000000	00000


				2 1/2"	0.0001" to 0.0003"					5/16"-18	57,000	Rockwell C47	ASME B18.8.2	000000000	00000
				3"	0.0001" to 0.0003"					5/16"-18	57,000	Rockwell C47	ASME B18.8.2	000000000	00000
				4"	0.0001" to 0.0003"					5/16"-18	57,000	Rockwell C47	ASME B18.8.2	000000000	00000




										1" Diameter

										2"	0.0001" to 0.0003"	3/8"-16	102,000	Rockwell C47	ASME B18.8.2	000000000	00000


						3"	0.0001" to 0.0003"			3/8"-16	102,000	Rockwell C47	ASME B18.8.2	000000000	00000
						4"	0.0001" to 0.0003"			3/8"-16	102,000	Rockwell C47	ASME B18.8.2	000000000	00000


						18-8 Stainless Steel







												1/4" Diameter

												3/4"	0.0001" to 0.0003"	8-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000


								1"	0.0001" to 0.0003"			8-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
								1 1/4"	0.0001" to 0.0003"			8-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
								1 1/2"	0.0001" to 0.0003"			8-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
								2"	0.0001" to 0.0003"			8-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
								2 1/2"	0.0001" to 0.0003"			8-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000




												5/16" Diameter

												3/4"	0.0001" to 0.0003"	10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000


												1"	0.0001" to 0.0003"	10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
1 1/4"												0.0001" to 0.0003"	10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
1 1/2"	0.0001" to 0.0003"											10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
2"	0.0001" to 0.0003"											10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000




												3/8" Diameter

												1"	0.0001" to 0.0003"	10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000


												1 1/4"	0.0001" to 0.0003"	10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
		1 1/2"										0.0001" to 0.0003"	10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
		1 3/4"	0.0001" to 0.0003"									10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
		2"	0.0001" to 0.0003"									10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
		2 1/4"	0.0001" to 0.0003"									10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
		2 1/2"	0.0001" to 0.0003"									10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
		3"	0.0001" to 0.0003"									10-32	Not Rated	Not Rated	ASME B18.8.2	000000000	00000




												1/2" Diameter

				1"								0.0001" to 0.0003"	1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000


				1 1/4"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
				1 1/2"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
				1 3/4"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
				2"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
				2 1/4"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000
				2 1/2"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
				3"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
				3 1/2"	0.0001" to 0.0003"							1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000




						5/8" Diameter

						1 1/2"	0.0001" to 0.0003"					1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	0000


						2"	0.0001" to 0.0003"			1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
						2 1/4"	0.0001" to 0.0003"			1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
						2 1/2"	0.0001" to 0.0003"			1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
						3"	0.0001" to 0.0003"			1/4"-20	Not Rated	Not Rated	ASME B18.8.2	000000000	00000




										3/4" Diameter

										2"	0.0001" to 0.0003"	5/16"-18	Not Rated	Not Rated	ASME B18.8.2	000000000	00000


								2 1/2"	0.0001" to 0.0003"	5/16"-18	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
								3"	0.0001" to 0.0003"	5/16"-18	Not Rated	Not Rated	ASME B18.8.2	000000000	00000
								4"	0.0001" to 0.0003"	5/16"-18	Not Rated	Not Rated	ASME B18.8.2	000000000	00000




										1" Diameter

										2"	0.0001" to 0.0003"	3/8"-16	Not Rated	Not Rated	—	000000000	00000


3"	0.0001" to 0.0003"									3/8"-16	Not Rated	Not Rated	—	000000000	00000
4"	0.0001" to 0.0003"									3/8"-16	Not Rated	Not Rated	—	000000000	00000

Pin Removal Tools

		Each
Puller Handle	000000000	000000
Tip for 3/16"-5/8" (6-12 mm) Diameter Pin	000000000	00000
Tip for 3/4"-1-1/2" (13-20 mm) Diameter Pin	000000000	00000
Extension (5 1/2 Overall Length)	000000000	00000