Thickness Thickness |
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Washer Type Washer Type |
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 | Square-Neck Bolt Lock |
 | For Rigid Insulation |
 | For Foam Insulation |
Finish Finish |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Hardness Hardness |
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About Washers
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Plastic Washers for Rigid Insulation
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
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 |
Square-Neck Bolt Lock Washers
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.