Product Details
The 3/8-16 x 4 slotted indented hex washer thread cutting screw type F is fully threaded and made of zinc. This type-F threaded screw is designed for use in heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass, and plastic. When utilized in stainless steel applications, the material into which the screw is cutting threads should have a lower hardness by 10-20 Rockwell hardness. The indented hex washer head provides the advantages of a hex head while offering greater protection to the mating surface.
