Setup Clamp Supports | McMaster-Carr

Filter by

System of Measurement

Width

Stud Diameter

Length

Height

Slot Width

Export Control Classification Number (ECCN)

REACH

Screw Size

RoHS

Overall Height

DFARS Specialty Metals

Exempt

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

Hole Diameter

Set Screw Drive Size

Edge-to-Slot Length

23 Products

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

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 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	0000000
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

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