Stainless steel thumb screws have excellent corrosion resistance in most environments.

Aluminum thumb screws are lightweight and resist corrosion in wet environments.

These metric thumb screws have a raised head that makes them easy to grip. A black-oxide finish provides corrosion resistance in dry environments.

These metric thumb screws are made of chemical-resistant 18-8 stainless steel. They have a raised head that makes them easy to grip.

A flange provides a bearing surface to hold parts under the head.

A raised head makes these thumb screws easy to grip. Made from nylon, they're chemical resistant, nonconductive, and lightweight.