Clamp Rests | McMaster-Carr

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197 Products

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



		3/16"	1/4"	8-32	3/16"	0" to 0.015"	Hex	—	8479A13	00000


		3/16"	5/16"	10-32	1/4"	0" to 0.015"	Hex	—	8479A14	0000
		3/16"	3/8"	1/4"-28	5/16"	0" to 0.015"	Hex	—	8479A15	0000
		1/4"	3/8"	1/4"-20	3/8"	-0.003" to 0.012"	Hex	—	8479A111	0000
		1/4"	3/8"	1/4"-28	5/16"	0" to 0.015"	Hex	—	8479A11	0000
		1/4"	1/2"	3/8"-16	1/2"	-0.003" to 0.012"	Hex	—	8479A116	0000
		1/4"	1/2"	3/8"-24	7/16"	0" to 0.015"	Hex	—	8479A37	0000
		1/4"	5/8"	1/2"-13	5/8"	-0.003" to 0.012"	Hex	—	8479A122	0000
		1/4"	3/4"	5/8"-11	3/4"	0" to 0.012"	Hex	—	8479A127	0000
		3/8"	3/8"	1/4"-20	3/8"	-0.003" to 0.012"	Hex	—	8479A112	0000
		3/8"	3/8"	1/4"-28	5/16"	0" to 0.015"	Hex	—	8479A12	0000


		3/8"	1/2"	3/8"-16	1/2"	-0.003" to 0.012"	Hex	—	8479A117	0000
		3/8"	1/2"	3/8"-24	7/16"	0" to 0.015"	Hex	—	8479A38	0000
		3/8"	5/8"	1/2"-13	5/8"	-0.003" to 0.012"	Hex	—	8479A123	0000
		3/8"	3/4"	5/8"-11	3/4"	0" to 0.012"	Hex	—	8479A128	0000
		1/2"	3/8"	1/4"-20	3/8"	-0.003" to 0.012"	Hex	—	8479A113	0000
		1/2"	1/2"	3/8"-16	1/2"	-0.003" to 0.012"	Hex	—	8479A118	0000
		1/2"	1/2"	3/8"-24	1/2"	0.005" to 0.015"	Hex	—	8479A4	0000
		1/2"	5/8"	1/2"-13	5/8"	-0.003" to 0.012"	Hex	—	8479A124	0000
		1/2"	5/8"	1/2"-20	1/2"	0.005" to 0.015"	Hex	—	8479A7	0000
		1/2"	3/4"	1/2"-20	9/16"	0" to 0.015"	Hex	—	8479A68	0000


		1/2"	3/4"	5/8"-11	3/4"	0" to 0.012"	Hex	—	8479A129	0000
		3/4"	3/8"	1/4"-20	3/8"	-0.003" to 0.012"	Hex	—	8479A114	0000
		3/4"	3/8"	1/4"-28	3/8"	0.005" to 0.015"	Hex	—	8479A2	0000
		3/4"	1/2"	3/8"-16	1/2"	-0.003" to 0.012"	Hex	—	8479A119	0000
		3/4"	1/2"	3/8"-24	1/2"	0.005" to 0.015"	Hex	—	8479A5	0000
		3/4"	5/8"	1/2"-13	5/8"	-0.003" to 0.012"	Hex	—	8479A125	0000
		3/4"	5/8"	1/2"-20	1/2"	0.005" to 0.015"	Hex	—	8479A8	0000
		3/4"	3/4"	5/8"-11	3/4"	0" to 0.012"	Hex	—	8479A131	0000
		1"	3/8"	1/4"-20	3/8"	-0.003" to 0.012"	Hex	—	8479A115	0000
		1"	3/8"	1/4"-28	3/8"	0.005" to 0.015"	Hex	—	8479A3	0000


		1"	1/2"	3/8"-16	1/2"	-0.003" to 0.012"	Hex	—	8479A121	0000
		1"	1/2"	3/8"-24	1/2"	0.005" to 0.015"	Hex	—	8479A6	0000
		1"	5/8"	1/2"-13	5/8"	-0.003" to 0.012"	Hex	—	8479A126	0000
		1"	5/8"	1/2"-20	1/2"	0.005" to 0.015"	Hex	—	8479A9	0000
		1"	3/4"	5/8"-11	3/4"	0" to 0.012"	Hex	—	8479A132	0000
		10 mm	10 mm	M6 × 1 mm	11 mm	-0.2 mm to 0.2 mm	Hex	DIN 6320	3078N11	0000
		15 mm	13 mm	M8 × 1.25 mm	13 mm	-0.2 mm to 0.2 mm	Hex	DIN 6320	3078N12	0000
		20 mm	17 mm	M10 × 1.5 mm	16 mm	-0.2 mm to 0.2 mm	Hex	DIN 6320	3078N13	0000
		25 mm	19 mm	M12 × 1.75 mm	20 mm	-0.2 mm to 0.2 mm	Hex	DIN 6320	3078N14	0000


		Hardened Steel with Flat Head



				10 mm	17 mm	M8 × 1.25 mm	10 mm	-0.01 mm to 0.01 mm	Hex	—	3078N15	00000


				10 mm	19 mm	M10 × 1.5 mm	12 mm	-0.01 mm to 0.01 mm	Hex	—	3078N16	00000
				10 mm	22 mm	M12 × 1.75 mm	14 mm	-0.01 mm to 0.01 mm	Hex	—	3078N17	00000


Hardened Steel with Domed Head



				10 mm	17 mm	M8 × 1.25 mm	10 mm	-0.1 mm to 0.1 mm	Hex	—	3078N18	00000


				10 mm	19 mm	M10 × 1.5 mm	12 mm	-0.1 mm to 0.1 mm	Hex	—	3078N19	00000
				10 mm	22 mm	M12 × 1.75 mm	14 mm	-0.1 mm to 0.1 mm	Hex	—	3078N21	00000

Swiveling Locating and Support Buttons

The swiveling tip supports uneven and angled surfaces on workpieces and fixtures. These buttons screw into a threaded hole. Also known as rest buttons.

		Head				Thread
	Tip Dia.	Lg.	Wd.	Tip-to-Head Lg.	Lg.	Size	Lg.	Range of Motion	Head Lg. Tolerance	Load Cap., lb.	Tip Material		Each
Steel



		1/4"	1/4"	3/8"	1/16"	5/16"	10-32	1/2"	28°	-0.002" to 0.002"	1,150	Stainless Steel	1417N11	000000


		5/16"	5/16"	7/16"	1/8"	7/16"	1/4"-20	1/2"	28°	-0.002" to 0.002"	2,400	Stainless Steel	1417N12	00000
		7/16"	3/8"	1/2"	1/8"	1/2"	5/16"-18	1/2"	28°	-0.002" to 0.002"	2,750	Stainless Steel	1417N13	00000
		9/16"	1/2"	5/8"	1/8"	5/8"	3/8"-16	1/2"	28°	-0.002" to 0.002"	3,400	Stainless Steel	1417N14	00000
		3/4"	5/8"	13/16"	1/8"	3/4"	1/2"-13	1"	32°	-0.002" to 0.002"	5,900	Stainless Steel	1417N15	00000
		13/16"	11/16"	15/16"	1/8"	13/16"	5/8"-11	1"	32°	-0.002" to 0.002"	9,900	Stainless Steel	1417N16	00000
		8 mm	8 mm	10 mm	2 mm	10 mm	M6 × 1 mm	12 mm	28°	-0.05 mm to 0.05 mm	2,050	Stainless Steel	1417N17	00000
		11 mm	11 mm	13 mm	3 mm	14 mm	M8 × 1.25 mm	12 mm	28°	-0.05 mm to 0.05 mm	3,450	Stainless Steel	1417N18	00000

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.

Stainless Steel—Stainless steel buttons are corrosion resistant. They’re usually paired with stainless steel workpieces or fixtures.

Round—Round buttons have an unthreaded, counterbored through hole. Mount them to a socket head cap screw.

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.

	Wd., mm	Lg.	Lg. Tolerance	For Mounting Screw Size	Thread Size	Mounting Fasteners Included		Each
Steel—Round with Flat Head



	5/16"	—	5/32"	0" to 0.001"	No. 2	—	No	8506A33	00000


	3/8"	—	3/16"	0" to 0.001"	No. 4	—	No	8506A34	0000
	3/8"	—	1/4"	0" to 0.001"	No. 6	—	No	8506A35	0000
	3/8"	—	1/4"	0" to 0.001"	No. 8	—	No	8506A36	0000
	1/2"	—	1/2"	-0.001" to 0.001"	No. 10	—	No	8506A16	0000
	5/8"	—	1/2"	0" to 0.001"	1/4"	—	No	8506A17	0000
	5/8"	—	5/8"	-0.001" to 0.001"	1/4"	—	No	8506A18	0000
	5/8"	—	3/4"	0" to 0.001"	1/4"	—	No	8506A31	0000
	5/8"	—	1"	0" to 0.001"	1/4"	—	No	8506A32	0000
	3/4"	—	1/2"	-0.001" to 0.001"	5/16"	—	No	8506A19	0000
	3/4"	—	5/8"	-0.001" to 0.001"	5/16"	—	No	8506A21	0000


	3/4"	—	3/4"	-0.001" to 0.001"	5/16"	—	No	8506A22	0000
	7/8"	—	1 1/8"	0" to 0.001"	5/16"	—	No	8506A111	0000
	15/16"	—	5/8"	-0.001" to 0.001"	3/8"	—	No	8506A23	0000
	15/16"	—	3/4"	-0.001" to 0.001"	3/8"	—	No	8506A24	0000
	15/16"	—	1"	-0.001" to 0.001"	3/8"	—	No	8506A26	0000
	1 1/4"	—	7/8"	-0.001" to 0.001"	1/2"	—	No	8506A27	0000
	1 1/4"	—	1 1/2"	0" to 0.001"	3/8"	—	No	8506A113	00000
	1 1/4"	—	2"	0" to 0.001"	3/8"	—	No	8506A115	00000
	1 5/8"	—	1 1/4"	0" to 0.001"	1/2"	—	No	8506A112	00000
	1 5/8"	—	1 3/4"	0" to 0.001"	1/2"	—	No	8506A114	00000


	1 5/8"	—	2 1/4"	0" to 0.001"	1/2"	—	No	8506A116	00000
	10 mm	—	10 mm	-0.03 mm to 0.03 mm	M3	—	No	3070N11	0000
	12 mm	—	10 mm	-0.03 mm to 0.03 mm	M4	—	No	3070N12	0000
	16 mm	—	12 mm	-0.03 mm to 0.03 mm	M5	—	No	3070N13	0000
	20 mm	—	12 mm	-0.03 mm to 0.03 mm	M6	—	No	3070N14	0000
	25 mm	—	12 mm	-0.03 mm to 0.03 mm	M6	—	No	3070N15	0000


	Acetal—Round with Flat Head



			3/8"	—	3/8"	-0.005" to 0"	No. 6	—	No	8506A41	0000


			1/2"	—	1/2"	-0.005" to 0"	No. 8	—	No	8506A42	0000
			5/8"	—	1/2"	-0.005" to 0"	No. 8	—	No	8506A43	0000
			3/4"	—	1/2"	-0.005" to 0"	No. 10	—	No	8506A44	0000
			1"	—	1/2"	-0.005" to 0"	1/4"	—	No	8506A45	0000


			Stainless Steel—Round with Flat Head



					3/8"	—	3/8"	-0.001" to 0.001"	No. 6	—	No	8506A46	0000


					1/2"	—	1/2"	-0.001" to 0.001"	No. 8	—	No	8506A47	0000
					5/8"	—	1/2"	-0.001" to 0.001"	No. 8	—	No	8506A48	0000
					3/4"	—	1/2"	-0.001" to 0.001"	No. 10	—	No	8506A49	0000
					1"	—	1/2"	-0.001" to 0.001"	1/4"	—	No	8506A51	00000


Hardened Steel—Hex with Flat Head



					—	17	15 mm	-0.01 mm to 0.01 mm	—	M8 × 1.25 mm	No	3070N21	00000


					—	19	20 mm	-0.01 mm to 0.01 mm	—	M10 × 1.5 mm	No	3070N22	00000
					—	22	20 mm	-0.01 mm to 0.01 mm	—	M12 × 1.75 mm	No	3070N23	00000


					Hardened Steel—Hex with Domed Head



							—	17	15 mm	-0.1 mm to 0.1 mm	—	M8 × 1.25 mm	No	3070N24	00000


							—	19	20 mm	-0.1 mm to 0.1 mm	—	M10 × 1.5 mm	No	3070N25	00000
							—	22	20 mm	-0.1 mm to 0.1 mm	—	M12 × 1.75 mm	No	3070N26	00000

Press-Fit Locating and Support Buttons

Support and position workpieces and fixtures from the bottom or side. These buttons press into a drilled hole for permanent installation. Also known as rest buttons.

Stainless Steel—Stainless steel buttons are a good choice to avoid corrosion when working with stainless steel workpieces or fixtures.

			Stud		Tolerance
	Dia.	Lg.	Dia.	Lg.	Lg.	Stud Dia.	Specs. Met		Each
Steel



		1/4"	1/8"	1/8"	7/32"	0" to 0.001"	0.001" to 0.0015"	—	8511A17	00000


		1/4"	1/4"	3/16"	7/32"	0.01" to 0.015"	0.0005" to 0.001"	—	8511A11	0000
		3/8"	1/8"	1/8"	7/32"	0" to 0.001"	0.001" to 0.0015"	—	8511A18	0000
		3/8"	1/4"	3/16"	7/32"	0.01" to 0.015"	0.0005" to 0.001"	—	8511A12	0000
		3/8"	1/4"	1/4"	1/2"	0" to 0.001"	0.0005" to 0.001"	—	8511A21	0000
		3/8"	3/8"	3/16"	3/8"	0" to 0.001"	-0.0005" to 0"	—	8511A415	0000
		3/8"	1/2"	3/16"	3/8"	0" to 0.005"	0.0005" to 0.001"	—	8511A23	0000
		1/2"	1/8"	1/8"	7/32"	0" to 0.001"	0.001" to 0.0015"	—	8511A19	0000
		1/2"	1/4"	1/4"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A24	0000
		1/2"	3/8"	1/4"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A25	0000
		1/2"	1/2"	1/4"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A26	0000


		5/8"	1/4"	3/8"	15/32"	0.01" to 0.015"	0.0005" to 0.001"	—	8511A16	0000
		5/8"	5/16"	5/16"	1/2"	0" to 0.001"	-0.0005" to 0"	—	8511A413	0000
		5/8"	3/8"	3/8"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A28	0000
		5/8"	7/16"	5/16"	1/2"	0" to 0.001"	-0.0005" to 0"	—	8511A418	0000
		5/8"	1/2"	3/8"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A29	0000
		5/8"	5/8"	3/8"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A31	0000
		5/8"	3/4"	3/8"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A32	0000
		5/8"	7/8"	5/16"	1/2"	0" to 0.001"	-0.0005" to 0"	—	8511A433	0000
		5/8"	1"	3/8"	1/2"	0" to 0.005"	0.0005" to 0.0015"	—	8511A33	0000
		3/4"	1 1/2"	1/2"	1/2"	0" to 0.01"	0.0005" to 0.0015"	—	8511A35	0000


		7/8"	1/4"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A411	0000
		7/8"	5/16"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A414	0000
		7/8"	3/8"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A416	00000
		7/8"	7/16"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A419	0000
		7/8"	1/2"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A421	0000
		7/8"	9/16"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A424	0000
		7/8"	5/8"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A425	0000
		7/8"	11/16"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A427	0000
		7/8"	3/4"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A428	0000
		7/8"	13/16"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A432	0000


		7/8"	7/8"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A434	0000
		7/8"	15/16"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A435	00000
		7/8"	1"	1/2"	5/8"	0" to 0.001"	-0.0005" to 0"	—	8511A436	0000
		1"	3/8"	5/8"	3/4"	0" to 0.001"	-0.0005" to 0"	—	8511A417	00000
		1"	1/2"	5/8"	3/4"	0" to 0.001"	-0.0005" to 0"	—	8511A422	00000
		1"	5/8"	5/8"	3/4"	0" to 0.001"	-0.0005" to 0"	—	8511A426	0000
		1"	3/4"	5/8"	3/4"	0" to 0.001"	-0.0005" to 0"	—	8511A429	0000
		1 1/2"	1/4"	1"	1 3/8"	0" to 0.001"	-0.0005" to 0"	—	8511A412	00000
		1 1/2"	1/2"	1"	1 3/8"	0" to 0.001"	-0.0005" to 0"	—	8511A423	00000
		1 1/2"	3/4"	1"	1 3/8"	0" to 0.001"	-0.0005" to 0"	—	8511A431	00000


		1 1/2"	1"	1"	1 3/8"	0" to 0.001"	-0.0005" to 0"	—	8511A437	00000
		6 mm	5 mm	4 mm	6 mm	-0.03 mm to 0 mm	0 mm to 0.02 mm	DIN 6321	3097N11	00000
		10 mm	6 mm	6 mm	9 mm	-0.03 mm to 0 mm	0 mm to 0.02 mm	DIN 6321	3097N12	00000
		16 mm	8 mm	8 mm	12 mm	-0.036 mm to 0 mm	0 mm to 0.04 mm	DIN 6321	3097N13	00000
		25 mm	10 mm	12 mm	18 mm	-0.036 mm to 0 mm	0 mm to 0.04 mm	DIN 6321	3097N14	00000


		Stainless Steel



3/8"	1/4"			3/16"	1/4"	0" to 0.001"	-0.015" to 0"	—	8511A111	0000


3/8"	3/8"			3/16"	1/4"	0" to 0.001"	-0.015" to 0"	—	8511A112	0000
3/8"	1/2"			3/16"	1/4"	0" to 0.001"	-0.015" to 0"	—	8511A113	0000
1/2"	1/4"			1/4"	5/16"	0" to 0.001"	-0.015" to 0"	—	8511A114	0000
1/2"	3/8"			1/4"	5/16"	0" to 0.001"	-0.015" to 0"	—	8511A115	0000
1/2"	1/2"			5/16"	5/16"	0" to 0.001"	-0.015" to 0"	—	8511A116	0000
1/2"	3/4"			5/16"	5/16"	0" to 0.001"	-0.015" to 0"	—	8511A117	0000
1/2"	1"			5/16"	5/16"	0" to 0.001"	-0.015" to 0"	—	8511A118	0000

Domed-Head Locating and Support Buttons

Support rounded or irregularly shaped workpieces from the bottom or side with minimal contact. Press the stud into a drilled hole for permanent installation. Also known as rest buttons.

Stainless Steel—Stainless steel buttons resist corrosion. They’re a good choice when working with stainless steel workpieces or fixtures.

			Stud		Tolerance
	Dia.	Lg.	Dia.	Lg.	Lg.	Stud Dia.		Each
Steel



		1/4"	1/8"	3/16"	1/4"	-0.002" to 0.002"	-0.0005" to 0"	1371N26	00000


		5/16"	1/8"	3/16"	1/4"	-0.002" to 0.002"	-0.0005" to 0"	1371N11	0000
		3/8"	3/16"	1/4"	5/16"	-0.002" to 0.002"	-0.0005" to 0"	1371N12	0000
		1/2"	3/16"	3/8"	3/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N13	0000
		1/2"	1/4"	3/8"	3/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N14	0000
		1/2"	3/8"	3/8"	3/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N15	0000
		1/2"	1/2"	3/8"	3/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N16	0000
		5/8"	3/8"	1/2"	5/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N27	00000
		3/4"	5/8"	1/2"	5/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N17	00000
		1"	3/4"	5/8"	3/4"	-0.002" to 0.002"	-0.0005" to 0"	1371N18	00000
		1"	1"	5/8"	3/4"	-0.002" to 0.002"	-0.0005" to 0"	1371N19	00000


		1 1/4"	1 1/4"	3/4"	7/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N21	00000
		6 mm	3.2 mm	4.5 mm	6 mm	-0.051 mm to 0.051 mm	-0.0127 mm to 0 mm	1371N24	0000
		10 mm	4.7 mm	7.5 mm	8 mm	-0.051 mm to 0.051 mm	-0.0127 mm to 0 mm	1371N25	0000


		Stainless Steel



				5/16"	1/8"	3/16"	1/4"	-0.002" to 0.002"	-0.0005" to 0"	1371N28	00000


				3/8"	3/16"	1/4"	5/16"	-0.002" to 0.002"	-0.0005" to 0"	1371N22	00000
				1/2"	1/4"	3/8"	3/8"	-0.002" to 0.002"	-0.0005" to 0"	1371N23	00000

Locating and Support Pads


2 Mounting Holes	4 Mounting Holes

With a larger contact surface than locating and support buttons, these pads can support large workpieces and fixtures. They’re also known as rest pads.

			Overall						Mounting Hole
	Face Lg.	Edge Ht.	Lg.	Wd.	Ht.	Ht. Tolerance	For Mounting Screw Size	Mounting Fasteners Included	Ctr.-to-Ctr.	Ctr.-to-Edge	No. of		Each
Steel



		1"	3/8"	2"	1"	0.475"	0" to 0.0005"	No. 10	No	1 1/2"	1/2"	2	1360N11	000000


		1 1/2"	1/2"	2 1/2"	1 1/2"	0.6"	0" to 0.0005"	1/4"	No	2"	3/4"	2	1360N12	00000
		2"	1/2"	3"	2"	0.725"	0" to 0.0005"	1/4"	No	1", 2 1/2"	1/2"	4	1360N16	00000
		2"	5/8"	3 1/2"	1"	0.72"	0" to 0.0005"	5/16"	No	2 3/4"	1/2"	2	1360N13	00000
		3"	5/8"	4 1/2"	1"	0.72"	0" to 0.0005"	5/16"	No	3 3/4"	1/2"	2	1360N14	00000
		4"	5/8"	5 1/2"	1"	0.72"	0" to 0.0005"	5/16"	No	4 3/4"	1/2"	2	1360N15	00000

T-Slot Clamp Supports

Keep T-slot clamps from falling out of position when they are unclamped—the spring holds them up for quick workpiece insertion and removal. Slide the support over your T-slot bolt or stud and lock in place by tightening the set screw on the collar. Also known as spring lifters.

	Set Screw Drive
For Stud Dia.	Size	Style	Material		Each
1/4"	3/32"	Hex	Steel	1650N51	00000
5/16"	3/32"	Hex	Steel	1650N52	0000
3/8"	1/8"	Hex	Steel	1650N53	0000
1/2"	1/8"	Hex	Steel	1650N54	0000
5/8"	5/32"	Hex	Steel	1650N55	0000
3/4"	5/32"	Hex	Steel	1650N56	00000
1"	5/32"	Hex	Steel	1650N57	00000

Step Blocks

Use these blocks to support step setup clamps. Fit the nonslip steps together for quick height adjustments.

Overall Height—Overall height applies when blocks are used as a pair.

				Step
Overall Ht.	Lg.	Wd.	Ht.	Ht.	Dp.	Hole Dia.	Material		Pair
3/4" to 1 5/8"	1 1/16"	1"	11/16"	1/8"	1/16"	—	Steel	5002A6	00000
1 1/8" to 2 1/2"	1 39/64"	1"	1 1/16"	1/8"	1/16"	—	Steel	5002A2	00000
1 3/4" to 4"	2 17/32"	1 1/2"	1 43/64"	1/8"	1/16"	—	Steel	5002A7	00000
1 3/4" to 4"	2 17/32"	2"	1 43/64"	1/8"	1/16"	—	Steel	5002A12	00000
2 1/2" to 6"	3 3/4"	1"	2 15/32"	1/8"	1/16"	1"	Steel	5002A3	00000
2 1/2" to 6"	3 3/4"	1 1/2"	2 15/32"	1/8"	1/16"	1"	Steel	5002A8	00000
2 1/2" to 6"	3 3/4"	2"	2 15/32"	1/8"	1/16"	1"	Steel	5002A13	00000
3 1/2" to 9"	5 21/64"	1 1/2"	3 7/16"	1/8"	1/16"	1 5/8"	Steel	5002A11	00000
3 1/2" to 9"	5 21/64"	2"	3 7/16"	1/8"	1/16"	1 5/8"	Steel	5002A14	00000
4 7/8" to 10 1/2"	7 3/16"	2"	4 5/8"	1/8"	1/16"	—	Steel	5002A15	000000

Slotted Support Blocks

Position T-slot side clamps at any angle you need to hold workpieces. These support blocks have a threaded hole at the top to attach your clamp. Slide a T-slot fastener through the slotted portion to hold the support block and clamp in place on your worktable. Then tighten the clamp to secure your workpiece.

Slot Wd.	For Screw Size	Lg.	Wd.	Ht.	Edge-to-Slot Lg.	Material		Each
3/8", 9 mm	M8	3 15/16", 100 mm	1 3/16", 30 mm	9/16", 15 mm	1 7/16", 37 mm	Steel	9942N121	0000000
1/2", 13 mm	M12	4 3/4", 120 mm	1 9/16", 40 mm	13/16", 20 mm	1 7/8", 48 mm	Steel	9942N122	000000
11/16", 17 mm	M16	5 1/2", 140 mm	2 3/8", 60 mm	1 3/16", 30 mm	2 3/8", 60 mm	Steel	9942N123	000000

Step Block Sets


Single Pair Shown In Use	Set	Single Pair Shown

Keep a variety of step blocks on hand to make quick height adjustments to your setups. Use the nonslip steps to support a step setup clamp, or fit two blocks together and secure a clamp on top. Blocks are steel, so they’ll hold up under heavy clamping and resist wear over time.

Overall height applies when blocks are used as a pair.

				Step
No. of Pairs	Includes	Lg.	Wd.	Ht.	Dp.	Hole Dia.	Material	Container Type		Each
10	Four Pairs of 1 1/16" Lg. × 1 1/16" Ht. Step Blocks—3/4"-1 5/8" Overall Ht. Four Pairs of 1 39/64" Lg. × 11/16" Ht. Step Blocks—1 1/8"-2 1/2" Overall Ht. Two Pairs of 3 3/4" Lg. × 2 15/32" Ht. Step Blocks—2 1/2"-6" Overall Ht.	1 1/16" to 3 3/4"	1"	1/8"	1/16"	1"	Steel	Metal Tray	7949N11	000000
10	Four Pairs of 2 17/32" Lg. × 1 43/64" Ht. Step Blocks—1 3/4"-4" Overall Ht. Four Pairs of 3 3/4" Lg. × 3 7/16" Ht. Step Blocks—2 1/2"-6" Overall Ht. Two Pairs of 5 21/64" Lg. × 2 15/32" Ht. Step Blocks—3 1/2"-9" Overall Ht.	2 17/32" to 5 21/64"	1 1/2"	1/8"	1/16"	1", 1 5/8"	Steel	Metal Tray	7949N12	000000
10	Four Pairs of 2 17/32" Lg. × 1 43/64" Ht. Step Blocks—1 3/4"-4" Overall Ht. Four Pairs of 3 3/4" Lg. × 3 7/16" Ht. Step Blocks—2 1/2"-6" Overall Ht. Two Pairs of 5 21/64" Lg. × 2 15/32" Ht. Step Blocks—3 1/2"-9" Overall Ht.	2 17/32" to 5 21/64"	2"	1/8"	1/16"	1"	Steel	Metal Tray	7949N13	000000