Sems screws combine three separate parts into one pre-assembled, low cost fastener. With washers under the head, SEMS screws are fast, permanent, and easily adaptable to many applications.

Material:alloy steel, carbon steel, stainless steel (304,316)

Finish:anodizing, black oxide, bronze coated, cadmium plated, chrome plated, dacromet coated(black, gray, etc.), hot dipped galvanized, nickel plated, passivated, phosphate, plain, tin plated, zinc plated, etc.