M12 Dowel Pins | McMaster-Carr

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42 Products

Single-End Studs

Screw the threaded end of these studs into a tapped hole, and use the unthreaded end as a pivot point, hinge, shaft, or locator pin.

Steel—These studs are steel for strength and wear resistance. They’re best for dry environments since moisture will cause them to rust. All meet ISO 2342 (formerly DIN 427), an international standard for fastener dimensions.

			Shaft, mm
	Lg., mm	Thread Lg., mm	Lg.	Dia.	Dia. Tolerance	Tensile Strength	Hardness	Drive Style	Specs. Met	Pkg. Qty.		Pkg.
Steel







				M12 × 1.75 mm

				25	14	11	12	-0.27 to 0	Not Rated	Rockwell B75	Slotted	DIN 427	1	000000000	00000


				30	16	14	12	-0.27 to 0	Not Rated	Rockwell B75	Slotted	DIN 427	1	000000000	0000
				35	14	21	12	-0.27 to 0	Not Rated	Rockwell B75	Slotted	DIN 427	1	000000000	0000
				40	14	26	12	-0.27 to 0	Not Rated	Rockwell B75	Slotted	DIN 427	1	000000000	0000

Threaded Taper Pins

Tighten the

nut to draw

the pin out of

the hole.

Threads on these pins stick out for easy removal from blind holes. Tighten the hex nut to draw the pin out. Often used for positioning components and securing assemblies, they taper at a uniform rate to fit in tapered holes. For a snug fit, use a tapered drill bit that matches the pin number for inch sizes or the small end diameter for metric sizes. They have slightly rounded edges to aid insertion.

Metric

Length for metric pins measures the overall length, including the thread.

12L14 Carbon Steel—12L14 Carbon steel pins have good strength.

Breaking Strength—Breaking strength is measured as single shear, which is the force required to break the pin into two pieces.

	Thread Lg., mm	Thread Size	Min. Hardness	Breaking Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
12L14 Carbon Steel







	12 mm Small End Diameter

	85	13	1:50	28.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000


	90	13.1	1:50	28.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	0000
	95	13.2	1:50	28.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	0000
	100	13.3	1:50	28.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	0000
	110	13.5	1:50	28.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000
	120	13.7	1:50	28.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000




			14 mm Small End Diameter

			85	14.9	1:50	31.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000


			90	15	1:50	31.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000
			95	15.1	1:50	31.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000
			100	15.2	1:50	31.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000
			110	15.4	1:50	31.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000
			120	15.6	1:50	31.75	M12	Rockwell B80	34,500	DIN 7977, ISO 8737	1	000000000	00000


			303 Stainless Steel







							12 mm Small End Diameter

							85	13	1:50	28.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000


							90	13.1	1:50	28.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
							95	13.2	1:50	28.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
							100	13.3	1:50	28.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
							110	13.5	1:50	28.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
							120	13.7	1:50	28.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000




									14 mm Small End Diameter

									85	14.9	1:50	31.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000


									90	15	1:50	31.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
									95	15.1	1:50	31.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
									100	15.2	1:50	31.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
									110	15.4	1:50	31.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	00000
120									15.6	1:50	31.75	M12	Rockwell B96	34,500	DIN 7977, ISO 8737	1	000000000	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

Threaded Locating and Support Buttons


	Flat Head	Domed Head

Use these buttons to support and position workpieces and fixtures from the bottom or side. Threading makes these buttons easier to replace than press-fit, so they are a good choice for high-wear applications. They’re also known as rest buttons.

Hardened Heat Treatment—Hardened steel buttons are stronger and resist wear better than steel buttons. They are precision ground, which helps them maintain their shape and size, even with repeated use. This makes them a good choice for use in modular fixtures where repeatability and exact positioning are important.

Domed Head—Buttons with a domed head support rounded or irregularly shaped workpieces with minimal contact.

Hex—Their hex shape lets you screw them into a threaded hole with a wrench or socket.

			Thread
	Lg., mm	Wd., mm	Size	Lg., mm	Lg. Tolerance, mm	Shape	Specs. Met		Each
Steel with Flat Head



		25	19	M12 × 1.75 mm	20	-0.2 to 0.2	Hex	DIN 6320	0000000	00000


		Hardened Steel with Flat Head



				10	22	M12 × 1.75 mm	14	-0.01 to 0.01	Hex	—	0000000	00000


				Hardened Steel with Domed Head



						10	22	M12 × 1.75 mm	14	-0.1 to 0.1	Hex	—	0000000	00000

Threaded Hole Location Gauges

Find the true center of threaded holes to precisely align and measure parts. Once you thread these gauges into a hole, their cylinder sticks out as a reliable reference point. They’re often used with a coordinate measuring machine (CMM) to pinpoint the coordinates of the cylinder’s exact center. You can then use those coordinates to measure distances between points or reference them for error-free assembly. Even without a CMM, you can use these gauges with a micrometer to measure accurate center-to-center distances.

Thread Size	Thread Type	Hardness	Material	Each
M12 × 1 mm	Metric	Rockwell C60	Tool Steel	0000000
M12 × 1.25 mm	Metric	Rockwell C60	Tool Steel	000000
M12 × 1.5 mm	Metric	Rockwell C60	Tool Steel	000000
M12 × 1.75 mm	Metric	Rockwell C60	Tool Steel	000000

Screw-Mount Locating and Support Buttons


	Flat Head	Hex	Domed Head

Also known as rest buttons, these buttons support workpieces and fixtures from the bottom or side. Mount them onto a screw or stud extending from your jig or table.

Hex—Hex buttons are easy to turn with a wrench. They have a threaded hole, so you can mount them to a threaded bolt or stud.

Domed Head—Those with a domed head support round or irregularly shaped workpieces with minimal contact.

	Lg., mm	Lg. Tolerance, mm	Thread Size	Mounting Fasteners Included		Each
Hardened Steel—Hex with Flat Head



	22	20	-0.01 to 0.01	M12 × 1.75 mm	No	0000000	000000


	Hardened Steel—Hex with Domed Head



			22	20	-0.1 to 0.1	M12 × 1.75 mm	No	0000000	00000