Threaded Plates | McMaster-Carr

	Thread Size Thread Size

	Length Length

	Width Width

	Material Material

Steel

Aluminum

	Mounting Hole Diameter Mounting Hole Diameter

	Number of Mounting Holes Number of Mounting Holes

	Mounting Hole Center-to-Center Mounting Hole Center-to-Center

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Mounting Hole Thread Size Mounting Hole Thread Size

1/4"-20

3/8"-16

	Height Height

	Unthreaded Mounting Hole Diameter Unthreaded Mounting Hole Diameter

0.225"

0.406"

0.562"

	Mounting Screw Size Mounting Screw Size

No. 10

1/4"

3/8"

	For Clamp Mounting Screw Thread Size For Clamp Mounting Screw Thread Size

11 Products

Screw Clamps

Use mounting bases to attach screw clamps to flat surfaces. Their threaded portion is machined at a slightly downward angle so the clamp can get a strong grip on the workpiece. Length is measured from under the screw collar.

Mounting Bases

Mounting Base

					Mounting Hole
Thread Size	Lg.	Wd.	Ht.	Material	Number of	Dia.	Ctr.-to-Ctr.		Each
1/4"-20	1 1/2"	7/16"	1 1/8"	Steel	2	7/32"	1 1/8"	000000000	000000
3/8"-16	2"	5/8"	1 3/8"	Steel	2	1/4"	1 7/16"	000000000	00000
1/2"-13	2 3/8"	3/4"	1 3/4"	Steel	2	3/8"	1 11/16"	000000000	00000
5/8"-11	3"	1"	2 1/4"	Steel	2	7/16"	2 1/8"	000000000	00000

Revolving Screw Clamps

Mount the clamp in a threaded hole or on a mounting base (sold separately).

For technical drawings and 3-D models, click on a part number.

Mounting Bases

Mounting Base

					Mounting Holes
For Clamp Mounting Screw Thread Size	Lg.	Wd.	Ht.	Material	Number of	Screw Size	Center-to-Center (A)	Center-to-Center (B)		Each
5/16"-18	1 7/16"	1"	1 1/2"	Steel	5	No. 10	3/4"	1"	0000000	000000
1/2"-13	2 1/4"	1 1/4"	2 1/4"	Steel	5	1/4"	1 1/8"	1 3/8"	0000000	00000
5/8"-11	2 1/4"	1 1/4"	2 1/4"	Steel	5	3/8"	1 1/4"	1 1/2"	0000000	00000

Threaded Mounting Plates for Any-Which Way Positioning Arms

Add a mounting surface to an any-which-way positioning arm.

For technical drawings and 3-D models, click on a part number.

Threaded Mount. Holes		Unthreaded Mount. Holes
No. of	Thread Size	No. of	Dia.	Center-to-Center	Mount. Hole Style	Mount. Fasteners Included	Material	Appearance		Each
4" Lg. × 4" Wd. × 0.38" Thick.
1	1/4"-20	4	0.225"	1 1/2"; 1 3/16"	Straight	No	Aluminum	Dull	0000000	000000
1	1/4"-20	4	0.406"	2"; 1 1/2"	Straight	No	Aluminum	Dull	0000000	00000
1	3/8"-16	4	0.225"	1 1/2"; 1 3/16"	Straight	No	Aluminum	Dull	0000000	00000
1	3/8"-16	4	0.562"	2 1/2"; 2"	Straight	No	Aluminum	Dull	0000000	00000