Thrust Pins | McMaster-Carr

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59 Products

Spring Locating Pins


Zinc-Plated Steel Head	Acetal Head

As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping. Press into a drilled hole using the installation tool (sold separately). Also known as spring locating pins and side-thrust pins.

Acetal Head—Acetal-head pins won't mar soft metal and polished surfaces.

	Pins											Installation Tools
	Body		Head
	Dia.	Lg.	Dia.	Lg.	Max. Head Movement	Min. Spring Force, lbf	Max. Spring Force, lbf	Body Dia. Tolerance	Body Material		Each		Each
Zinc-Plated Steel Head



		0.25"	0.28"	0.12"	0.16"	0.04"	2.3	2.5	0" to 0.0009"	Aluminum	0000000	00000	0000000	000000


		0.25"	0.28"	0.12"	0.16"	0.04"	4.5	5	0" to 0.0009"	Aluminum	0000000	0000	0000000	00000
		0.25"	0.28"	0.12"	0.16"	0.04"	Not Rated	9	-0.002" to 0.002"	Aluminum	0000000	0000	0000000	00000
		0.44"	0.43"	0.2"	0.24"	0.06"	4.5	5	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.44"	0.43"	0.2"	0.24"	0.06"	11.3	12.4	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.44"	0.43"	0.24"	0.43"	0.08"	9	9.9	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.44"	0.43"	0.24"	0.43"	0.08"	16.9	18.6	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.5"	0.51"	0.31"	0.53"	0.1"	11.3	12.4	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.5"	0.51"	0.31"	0.53"	0.1"	22.5	24.8	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.63"	0.67"	0.39"	0.64"	0.13"	22.5	24.8	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
		0.63"	0.67"	0.39"	0.64"	0.13"	45	49.5	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000


		6 mm	7 mm	3 mm	4 mm	1 mm	2.3	2.5	0 mm to 0.0221 mm	Aluminum	0000000	0000	0000000	00000
		6 mm	7 mm	3 mm	4 mm	1 mm	4.5	5	0 mm to 0.0221 mm	Aluminum	0000000	0000	0000000	00000
		6 mm	7 mm	3 mm	4 mm	1 mm	9	9.9	0 mm to 0.0221 mm	Aluminum	0000000	0000	0000000	00000
		10 mm	11 mm	5 mm	6.7 mm	1.6 mm	4.5	5	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		10 mm	11 mm	5 mm	6.7 mm	1.6 mm	11.3	12.4	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		10 mm	11 mm	5 mm	6.7 mm	1.6 mm	22.5	24.8	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		10 mm	11 mm	6 mm	10.7 mm	2 mm	9	9.9	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		10 mm	11 mm	6 mm	10.7 mm	2 mm	16.9	18.6	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		10 mm	11 mm	6 mm	10.7 mm	2 mm	33.8	37.1	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		12 mm	13 mm	8 mm	13.6 mm	2.6 mm	Not Rated	33	-0.01 mm to 0.01 mm	Aluminum	0000000	0000	0000000	00000


		12 mm	13 mm	8 mm	13.9 mm	2.6 mm	11.3	12.4	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		12 mm	13 mm	8 mm	13.9 mm	2.6 mm	22.5	24.8	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		16 mm	17 mm	10 mm	16.7 mm	3.2 mm	22.5	24.8	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		16 mm	17 mm	10 mm	16.7 mm	3.2 mm	67.5	74.3	0 mm to 0.0269 mm	Aluminum	0000000	0000	0000000	00000
		16 mm	17 mm	10 mm	16.7 mm	3.2 mm	Not Rated	33	-0.01 mm to 0.01 mm	Aluminum	0000000	0000	0000000	00000


		Acetal Head



				0.25"	0.28"	0.12"	0.16"	0.04"	2.3	2.5	0" to 0.0009"	Aluminum	0000000	0000	0000000	00000


				0.44"	0.38"	0.24"	0.41"	0.08"	13.5	14.8	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
				0.44"	0.43"	0.24"	0.43"	0.08"	9	9.9	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
				0.5"	0.51"	0.31"	0.53"	0.1"	11.3	12.4	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
				0.63"	0.67"	0.39"	0.64"	0.13"	22.5	24.8	0" to 0.0011"	Aluminum	0000000	0000	0000000	00000
				6 mm	7 mm	3 mm	4 mm	1 mm	2.3	2.5	0 mm to 0.022 mm	Aluminum	0000000	0000	0000000	00000
				10 mm	11 mm	5 mm	6.7 mm	1.6 mm	4.5	5	0 mm to 0.027 mm	Aluminum	0000000	0000	0000000	00000
				10 mm	11 mm	6 mm	10.7 mm	2 mm	9	9.9	0 mm to 0.027 mm	Aluminum	0000000	0000	0000000	00000
				12 mm	13 mm	8 mm	13.9 mm	2.6 mm	11.3	12.4	0 mm to 0.027 mm	Aluminum	0000000	0000	0000000	00000
				16 mm	17 mm	10 mm	16.7 mm	3.2 mm	22.5	24.8	0 mm to 0.027 mm	Aluminum	0000000	0000	0000000	00000

Spring Locating Pin Installation Tools

For Press-Fit Pins

For Screw-In

Pins

Use these tools for easier locating pin installation.

For Press-Fit Pins—Tools for press-fit pins slip over the head of the pin to let you press or hammer it into place.

For Screw-In Pins—Tools for screw-in pins slot into notches on the side of the pin body to help you twist it into place.

	Material		Each
For Press-Fit Pins



	0.12", 3 mm	Steel	0000000	000000


	0.2", 0.24", 4 mm, 5 mm, 6 mm	Steel	0000000	00000
	0.31", 8 mm	Steel	0000000	00000
	0.39", 10 mm	Steel	0000000	00000


	For Screw-In Pins



			5 mm, 6 mm	Steel	0000000	00000


			10 mm	Steel	0000000	00000

Threaded Spring Locating Pins

Threading makes these guide pins easier to remove and replace than press fit, so they're useful for high-wear applications. A sealed top prevents debris from getting inside and making them seize up. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping.

	Pins												Installation Tools
		Body, mm		Head, mm
	Thread Size	Dia.	Lg.	Dia.	Lg.	Max. Head Movement, mm	Min. Spring Force	Max. Spring Force, lbf	Body Dia. Tolerance, mm	Body Material		Each		Each
Zinc-Plated Steel Head



		M12 × 1.75 mm	10	11.5	5	6	0.8	Not Rated	4.5	-0.15 to 0.15	Steel	0000000	00000	0000000	000000


		M12 × 1.75 mm	10	11.5	5	6	0.8	Not Rated	22	-0.15 to 0.15	Steel	0000000	0000	0000000	00000
		M12 × 1.75 mm	10	11.5	6	10	1	Not Rated	9	-0.15 to 0.15	Steel	0000000	0000	0000000	00000
		M12 × 1.75 mm	10	11.5	6	10	1	Not Rated	16	-0.15 to 0.15	Steel	0000000	0000	0000000	00000
		M18 × 1.5 mm	16	18	10	16	1.6	Not Rated	33	-0.15 to 0.15	Steel	0000000	0000	0000000	00000
		M18 × 1.5 mm	16	18	10	16	1.6	Not Rated	45	-0.15 to 0.15	Steel	0000000	0000	0000000	00000

Sealed Spring Locating Pins

Sealed at the top to prevent debris from getting inside and making them seize up, these guide pins are a good choice for machining fixtures. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping. Press into a drilled hole using the installation tool (sold separately).

	Pins											Installation Tools
	Body		Head
	Dia.	Lg.	Dia.	Lg.	Max. Head Movement	Max. Spring Force, lbf	Body Dia. Min. Tolerance	Body Dia. Max. Tolerance	Body Material		Each		Each
Stainless Steel Head



		0.25"	0.28"	0.12"	0.16"	0.02"	4.5	—	0.004"	Aluminum	0000000	00000	0000000	000000


		0.44"	0.37"	0.24"	0.41"	0.04"	6.7	-0.0004"	0.0004"	Aluminum	0000000	00000	0000000	00000
		0.5"	0.55"	0.32"	0.52"	0.05"	11.1	-0.0004"	0.0004"	Aluminum	0000000	00000	0000000	00000
		0.63"	0.68"	0.39"	0.68"	0.06"	18	-0.0004"	0.0004"	Aluminum	0000000	00000	0000000	00000
		6 mm	7 mm	3 mm	3.7 mm	0.4 mm	4.5	-0.15 mm	0.15 mm	Plastic	0000000	0000	0000000	00000
		8 mm	9 mm	4 mm	5.2 mm	0.6 mm	6.5	-0.15 mm	0.15 mm	Plastic	0000000	0000	0000000	00000
		10 mm	9 mm	6 mm	10.3 mm	1 mm	6.5	-0.15 mm	0.15 mm	Plastic	0000000	0000	0000000	00000
		12 mm	13 mm	8 mm	13.3 mm	1.2 mm	11	-0.25 mm	0.25 mm	Plastic	0000000	00000	0000000	00000
		16 mm	16 mm	10 mm	16.9 mm	1.6 mm	18	-0.15 mm	0.15 mm	Plastic	0000000	00000	0000000	00000

Create-Your-Own Spring Locating Pins

Thread in a screw, handle, or other part to create the right size and shape guide pin for your application. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping. Press into a drilled hole using the installation tool (sold separately).

	Body
Thread Size	Dia.	Lg.	Min. Spring Force	Max. Spring Force, lbf	Body Dia. Tolerance	Body Material		Each



	8-32	0.44"	0.43"	Not Rated	4.5	-0.002" to 0.002"	Aluminum	0000000	00000


	1/4"-20	0.63"	0.67"	Not Rated	45	-0.0004" to 0.0004"	Aluminum	0000000	00000