Protect externally threaded components from contaminants during fabrication and storage.

Aluminum caps withstand temperatures up to 650° F, which is more than four times as high as plastic caps. They are also more abrasion resistant. All meet military specification MIL-C-5501/3 for dust and moisture protection.

Plastic caps resist corrosion better than aluminum caps.

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