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Plastic Washers for Rigid Insulation
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Plastic washers resist moisture, chemicals, and friction and are good electrical insulators. These have a large surface that distributes holding pressure to reduce the likelihood of crushing insulation.
Washers with prongs enable pre-spotting into insulation for easy on-the-wall fastener assembly.
Washers with an insulating seal have a stiff center with a flexible perimeter that creates a barrier against air and moisture penetration when fastened to rigid insulation.
For technical drawings and 3-D models, click on a part number.
Washers for Foam Insulation
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These washers have prongs that pierce foam insulation so they stay in place. Use them with self-sinking flat head (bugle head) screws. They are galvanized steel for corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Prong Lg. | Pkg. Qty. | Pkg. | |
Galvanized Steel | |||||||
---|---|---|---|---|---|---|---|
No. 8 | 0.175" | 1.250" | 0.020"-0.024" | 5/16" | 50 | 000000000 | 000000 |
Washers for Square-Neck Bolts
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A square hole prevents these washers from turning with the bolt or shaft. They work with square shafts and rods and square-neck bolts such as carriage bolts.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Zinc-plated steel washers resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
For Screw Size | Inside Wd. | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||
---|---|---|---|---|---|---|---|
No. 10 | 0.204" | 0.437" | 0.025"-0.035" | Not Rated | 50 | 000000000 | 000000 |
No. 10 | 0.226" | 0.500" | 0.043"-0.053" | Not Rated | 50 | 000000000 | 00000 |
No. 10 | 0.253" | 0.561" | 0.028"-0.034" | Not Rated | 50 | 000000000 | 00000 |
1/4" | 0.320" | 0.680" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
5/16" | 0.385" | 0.750" | 0.043"-0.053" | Not Rated | 25 | 000000000 | 00000 |
3/8" | 0.392" | 0.900" | 0.085"-0.095" | Not Rated | 10 | 000000000 | 00000 |
3/8" | 0.405" | 0.700" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
7/16" | 0.517" | 0.937" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
1/2" | 0.555" | 1.000" | 0.055"-0.065" | Not Rated | 10 | 000000000 | 00000 |
1/2" | 0.617" | 1.125" | 0.055"-0.065" | Not Rated | 10 | 000000000 | 00000 |
5/8" | 0.650" | 1.500" | 0.115"-0.125" | Not Rated | 5 | 000000000 | 00000 |
5/8" | 0.700" | 1.250" | 0.055"-0.065" | Not Rated | 10 | 000000000 | 00000 |
3/4" | 0.812" | 1.375" | 0.055"-0.065" | Not Rated | 5 | 000000000 | 0000 |
Zinc-Plated Steel | |||||||
No. 10 | 0.204" | 0.437" | 0.025"-0.035" | Not Rated | 25 | 000000000 | 00000 |
No. 10 | 0.226" | 0.500" | 0.043"-0.053" | Not Rated | 25 | 000000000 | 00000 |
No. 10 | 0.253" | 0.561" | 0.028"-0.034" | Not Rated | 25 | 000000000 | 00000 |
1/4" | 0.320" | 0.680" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
5/16" | 0.385" | 0.750" | 0.043"-0.053" | Not Rated | 25 | 000000000 | 00000 |
3/8" | 0.392" | 0.900" | 0.085"-0.095" | Not Rated | 25 | 000000000 | 00000 |
3/8" | 0.405" | 0.700" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
7/16" | 0.517" | 0.937" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
1/2" | 0.555" | 1.000" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
1/2" | 0.617" | 1.125" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
5/8" | 0.650" | 1.500" | 0.115"-0.125" | Not Rated | 25 | 000000000 | 00000 |
5/8" | 0.700" | 1.250" | 0.055"-0.065" | Not Rated | 25 | 000000000 | 00000 |
3/4" | 0.812" | 1.375" | 0.055"-0.065" | Not Rated | 10 | 000000000 | 00000 |
Lock Washers for Square-Neck Bolts
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Designed for use with square-neck bolts such as carriage bolts, these washers have teeth that dig into wood and other soft material to prevent rotation. They’re zinc-plated steel for corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.