5 x 3/8 Round Head Type U Drive Screw Zinc M3.5-.0.6 They have a square flat

They have a square flat head and are designed for use in a variety of applications

providing a clean and professional-looking finish

These 1-8 x 3 1/2 Heavy Hex Structural Bolts are made of high-strength steel and are designed for use in structural applications

The 3/8 x 2 1/2 Fender Washer Hot Dip Galvanized is a large

which is a type of stainless steel that is known for its corrosion resistance

5 x 3/8 Round Head Type U Drive Screw Zinc M3.5-.0.6 They have a square flatThese 5 8 inch round head Type U drive screws are constructed of zinc plated steel for durability and corrosion resistance. They feature a sharp point for easy penetration and a single flute thread for secure holding power. The round head provides a finished appearance and helps to distribute the load. These screws are commonly used in a variety of applications, including fastening metal, wood, and plastic.