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Barrel Length Barrel Length |
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For Material Thickness For Material Thickness |
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![]() | Truss |
Barrel Drive Style Barrel Drive Style |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Thumb Screw and Binding Post Materials
More
Aluminum Low-Profile Binding Barrels and Screws

Made from aluminum, these binding barrels and screws are lightweight, corrosion resistant in wet environments, and nonmagnetic. A thin head provides a nearly flush finish with the material surface. Barrel length and screw length are measured from under the head.
Open-end barrels are tapped through the head to provide more thread engagement when fastening thin materials.
Black anodized binding barrels and screws have an attractive black finish.
For technical drawings and 3-D models, click on a part number.

Barrel | Screw | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | For Material Thick. | Lg. | Dia. | Head Dia. | Head Ht. | Thread Dp. | Lg. | Head Dia. | Head Ht. | Includes | Pkg. Qty. | Pkg. | |
Black Anodized 6061 Aluminum | |||||||||||||
8-32 | 1/4" to 1/2" | 1/4" | 13/64" | 13/32" | 1/16" | 1/4" | 3/8" | 13/32" | 1/16" | Open-End Barrel, Screw | 25 | 000000000 | 000000 |
8-32 | 3/8" to 5/8" | 3/8" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Open-End Barrel, Screw | 25 | 000000000 | 00000 |
8-32 | 5/8" to 3/4" | 1/2" | 13/64" | 13/32" | 1/16" | 1/4" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 25 | 000000000 | 00000 |
8-32 | 2 1/2" to 2 3/4" | 2 1/2" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 1 | 000000000 | 0000 |
8-32 | 3" to 3 1/4" | 3" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 1 | 000000000 | 0000 |
8-32 | 4" to 4 1/4" | 4" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 1 | 000000000 | 0000 |
8-32 | 5" to 5 1/4" | 5" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 1 | 000000000 | 0000 |
8-32 | 6" to 6 1/4" | 6" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 1 | 000000000 | 0000 |
Black Anodized 6063 Aluminum | |||||||||||||
8-32 | 1/8" to 3/16" | 1/8" | 13/64" | 13/32" | 1/16" | 1/8" | 3/16" | 13/32" | 1/16" | Open-End Barrel, Screw | 25 | 000000000 | 00000 |
8-32 | 3/16" to 1/4" | 3/16" | 13/64" | 13/32" | 1/16" | 3/16" | 0.188" | 13/32" | 1/16" | Open-End Barrel, Screw | 25 | 000000000 | 00000 |
8-32 | 5/8" to 7/8" | 5/8" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 0000 |
8-32 | 3/4" to 1" | 3/4" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 0000 |
8-32 | 1" to 1 1/4" | 1" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 00000 |
8-32 | 1 1/4" to 1 1/2" | 1 1/4" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 00000 |
8-32 | 1 1/2" to 1 3/4" | 1 1/2" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 00000 |
8-32 | 1 3/4" to 2" | 1 3/4" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 00000 |
8-32 | 2" to 2 1/4" | 2" | 13/64" | 13/32" | 1/16" | 3/8" | 3/8" | 13/32" | 1/16" | Barrel, Screw | 10 | 000000000 | 00000 |







Barrel | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Lg. | Dia. | Thread Dp. | Thread Lg. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 00000 |
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 1 | 000000000 | 0000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
18-8 Stainless Steel | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 1 | 000000000 | 0000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 1 | 000000000 | 0000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 00000 |
316 Stainless Steel | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 1 | 000000000 | 0000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 00000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 00000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 00000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 00000 |
6061 Aluminum | |||||||
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 5 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 5 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 0000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 00000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 00000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
6063 Aluminum | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 50 | 000000000 | 00000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 50 | 000000000 | 00000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 25 | 000000000 | 00000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 25 | 000000000 | 00000 |
Black Anodized 6061 Aluminum | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 1 | 000000000 | 0000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
Brass | |||||||
8-32 | 1/4" | 13/64" | 3/16" | 1/8" | 5 | 000000000 | 0000 |
8-32 | 5/16" | 13/64" | 3/16" | 1/8" | 5 | 000000000 | 0000 |
8-32 | 3/8" | 13/64" | 1/4" | 3/16" | 5 | 000000000 | 0000 |
8-32 | 1/2" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 0000 |
8-32 | 5/8" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 00000 |
8-32 | 3/4" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 00000 |
8-32 | 7/8" | 13/64" | 3/8" | 1/4" | 5 | 000000000 | 00000 |
8-32 | 1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
8-32 | 2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
Extensions for Low-Profile Binding Barrels

Add length to a binding barrel.
All aluminum extensions are lightweight, corrosion resistant in wet environments, electrically conductive, and nonmagnetic. Black-oxide aluminum extensions have a matte-black finish.
For technical drawings and 3-D models, click on a part number.
Barrel | ||||||
---|---|---|---|---|---|---|
Lg. | Dia. | Thread Dp. | Thread Lg. | Pkg. Qty. | Pkg. | |
Black Anodized 6061 Aluminum | ||||||
8-32 | ||||||
1/4" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 00000 |
5/16" | 13/64" | 3/16" | 1/8" | 1 | 000000000 | 0000 |
3/8" | 13/64" | 1/4" | 3/16" | 1 | 000000000 | 0000 |
1/2" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
5/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
3/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
7/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
1" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
1 1/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
1 1/4" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
1 3/8" | 13/64" | 3/8" | 1/4" | 1 | 000000000 | 0000 |
1 1/2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
1 5/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
1 3/4" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
1 7/8" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |
2" | 13/64" | 1/2" | 1/4" | 1 | 000000000 | 0000 |