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Grippers

Locating and Support Buttons

System of Measurement

Thread Size

Mount Type

Shape

Length

Thread Length

Width

Fastener Head Type

Material

Diameter

Head Length

Head Width

Thread Pitch

Height

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Compliant with Exemptions

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Specifications Met

Head Height

Finish

Load Capacity

Tip Diameter

Performance

Serration Type

93 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

Hex-Head Gripper Screws

Make quick height adjustments by turning the threaded stud. Screw these grippers into place from above and clamp against them. The serrations penetrate the workpiece surface to hold uneven or irregularly shaped parts.

Hex with Threaded Stud

Extra-Fine

Serrations

Fine Serrations

Extra-Fine Serrations—Extra-fine serrations are closer together than fine serrations for less penetration and a lighter hold on the workpiece.

Fine Serrations—Fine serrations penetrate the workpiece for aggressive holding.

Fine Thread—Fine threads are closely spaced for more precise adjustments than coarse threads. They also resist loosening from vibration better than coarse threads.

	Thread					Head
	Size	Lg.	Spacing	Dia.	Ht.	Ht.	Wd.	Material		Each
Extra-Fine Serrations



		1/4"-20	1/2"	Coarse	5/16"	45/64"	13/64"	7/16"	Carbide-Tipped Steel	8523A11	00000


		1/4"-20	1"	Coarse	5/16"	1 13/64"	13/64"	7/16"	Carbide-Tipped Steel	8523A12	00000
		5/16"-18	1/2"	Coarse	3/8"	3/4"	1/4"	1/2"	Carbide-Tipped Steel	8523A51	0000
		5/16"-18	1"	Coarse	3/8"	1 1/4"	1/4"	1/2"	Carbide-Tipped Steel	8523A52	00000
		3/8"-16	1/2"	Coarse	1/2"	25/32"	9/32"	9/16"	Carbide-Tipped Steel	8523A54	00000
		3/8"-16	1"	Coarse	1/2"	1 9/32"	9/32"	9/16"	Carbide-Tipped Steel	8523A55	00000
		1/2"-13	1"	Coarse	5/8"	1 23/64"	23/64"	3/4"	Carbide-Tipped Steel	8523A57	00000
		1/2"-20	1"	Fine	5/8"	1 23/64"	23/64"	3/4"	Carbide-Tipped Steel	8523A121	00000


		Fine Serrations



				5/16"-18	1/2"	Coarse	3/8"	3/4"	1/4"	1/2"	Carbide-Tipped Steel	8523A31	0000


				5/16"-18	1"	Coarse	3/8"	1 1/4"	1/4"	1/2"	Carbide-Tipped Steel	8523A32	00000
				5/16"-24	1/2"	Fine	3/8"	3/4"	1/4"	1/2"	Carbide-Tipped Steel	8523A122	0000
				5/16"-24	1"	Fine	3/8"	1 1/4"	1/4"	1/2"	Carbide-Tipped Steel	8523A123	00000
				3/8"-16	1/2"	Coarse	1/2"	25/32"	9/32"	9/16"	Carbide-Tipped Steel	8523A34	00000
				3/8"-16	1"	Coarse	1/2"	1 9/32"	9/32"	9/16"	Carbide-Tipped Steel	8523A35	00000
				3/8"-16	1 1/2"	Coarse	1/2"	1 25/32"	9/32"	9/16"	Carbide-Tipped Steel	8523A36	00000
				3/8"-24	1"	Fine	1/2"	1 9/32"	9/32"	9/16"	Carbide-Tipped Steel	8523A124	00000
				1/2"-13	1"	Coarse	5/8"	1 23/64"	23/64"	3/4"	Carbide-Tipped Steel	8523A37	00000
				1/2"-13	1 1/2"	Coarse	5/8"	1 55/64"	23/64"	3/4"	Carbide-Tipped Steel	8523A38	00000
				1/2"-20	1"	Fine	5/8"	1 23/64"	23/64"	3/4"	Carbide-Tipped Steel	8523A125	00000


				5/8"-11	1"	Coarse	3/4"	1 7/16"	7/16"	15/16"	Carbide-Tipped Steel	8523A39	00000
				5/8"-11	2"	Coarse	3/4"	2 7/16"	7/16"	15/16"	Carbide-Tipped Steel	8523A41	00000
				M8 × 1.25 mm	12 mm	Coarse	9.5 mm	18.4 mm	6.4 mm	13 mm	Carbide-Tipped Steel	8523A126	0000
				M10 × 1.25 mm	25 mm	Fine	12.7 mm	32.5 mm	7.5 mm	17 mm	Carbide-Tipped Steel	8523A127	00000
				M12 × 1.75 mm	25 mm	Coarse	15.9 mm	33.7 mm	8.7 mm	19 mm	Carbide-Tipped Steel	8523A128	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

Image of Product. Front orientation. Locating and Support Buttons. Screw-Mount Locating and Support Buttons, Hex.

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



	17	15	-0.01 to 0.01	M8 × 1.25 mm	No	3070N21	000000


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


	Hardened Steel—Hex with Domed Head



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


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

Swivel-Tip Gripper Screws

The serrated tip swivels to grip uneven and angled surfaces and the threaded stud lets you make quick height adjustments.

Hex with Threaded Stud

Image of Product. Front orientation. Contains Annotated. Grippers. Swivel-Tip Gripper Screws.

Ultra-Fine Serrations—Ultra-fine serrations are the most closely spaced for the lightest penetration of the workpiece.

Extra-Fine Serrations—Extra-fine serrations are closer together for less penetration and a lighter hold on the workpiece.

Fine Serrations—Fine serrations penetrate the workpiece for aggressive holding.

	Thread				Head
	Size	Lg.	Dia.	Ht.	Ht.	Wd.	Range of Motion	Load Cap., lb.	Material	Tip Material		Each
Ultra-Fine Serrations



		10-32	1/2"	5/32"	3/4"	1/4"	3/8"	28°	1,150	Steel	Steel	1577N11	000000


		1/4"-20	1/2"	1/4"	13/16"	5/16"	7/16"	28°	2,400	Steel	Steel	1577N12	00000


		Extra-Fine Serrations



				5/16"-18	1/2"	5/16"	7/8"	3/8"	1/2"	28°	2,750	Steel	Steel	1577N13	00000


				3/8"-16	1/2"	3/8"	1"	1/2"	5/8"	40°	3,400	Steel	Steel	1577N14	00000


				Fine Serrations



						1/2"-13	1"	1/2"	1 5/8"	5/8"	13/16"	40°	5,900	Steel	Steel	1577N15	00000


						5/8"-11	1"	5/8"	1 11/16"	11/16"	15/16"	34°	9,900	Steel	Steel	1577N16	00000

Solid-Surface Grippers

Clamp uneven or odd-shaped workpieces onto these grippers to hold them securely in place. Rather than a through hole, these grippers have a solid surface that grips your workpiece evenly and shields the mounting hole from debris. However, they can be harder to line up than grippers with a through hole. They mount from the bottom with a socket head cap screw.

Hex with Threaded Hole


	Threaded Hole	Fine Serrations

Hex grippers can be tightened with a wrench.

Fine Serrations—Fine serrations penetrate the workpiece for aggressive holding.

Wd., mm	Ht., mm	Mounting Hole Thread Size	Mounting Fasteners Included	Material	Gripping Surface Texture	Serration Type		Each
17	15	M8	No	Steel	Serrated	Fine	8225N113	000000
19	20	M10	No	Steel	Serrated	Fine	8225N114	00000
22	20	M12	No	Steel	Serrated	Fine	8225N115	00000