4-20 x 5/16 Phillips Flat Plastite Alternative 48-2 Fully Threaded 18-8 S/S Passivated & Wax 8-32 064-105 They are made of steel

They are made of steel and have a zinc bake finish that provides 1000 hours of salt spray protection

and a flat undercut head that sits flush with the surface of the material being fastened

it's perfect for various construction and repair tasks

This 2-56 x 7/16 Phillips flat 100º machine screw is fully threaded and made of zinc

M8 x 60 DIN 931 10

4-20 x 5/16 Phillips Flat Plastite Alternative 48-2 Fully Threaded 18-8 S/S Passivated & Wax 8-32 064-105 They are made of steel4 20 x 5 16 Phillips flat plastite alternative 48 2 fully threaded 18 8 S S passivated & wax are screws made of 18 8 stainless steel, which is resistant to corrosion and rust. They have a Phillips drive and a flat head, and are fully threaded for added strength. The screws are passivated and waxed for added protection against corrosion. They are commonly used in a variety of applications, including construction, manufacturing, and automotive.