3/8-16 x 2 Six Lobe Flat Floor Board Screw Type F Black Phosphate KPFMS4W The serrated hex flange washer

The serrated hex flange washer head prevents the screw from loosening due to vibration and provides a finished look

The 4-40 x 5/16 Phillips Flat 100º Machine Screw Fully Threaded Zinc Yellow is a small

and a slotted indented hex washer head

This 5/16-18 x 1 Slotted Indented Hex Head Machine Screw is a fully threaded screw made of zinc-plated steel

3/8-16 x 2 Six Lobe Flat Floor Board Screw Type F Black Phosphate KPFMS4W The serrated hex flange washerThe 3 8 16 x 2 Six Lobe Flat Floor Board Screw Type F Black Phosphate is a high quality screw designed for use in a variety of applications. It features a 3 8 inch diameter, a 16 threads per inch pitch, and a 2 inch length. The six lobe drive provides a secure grip, while the flat floor head sits flush with the surface of the material. The black phosphate finish provides corrosion resistance and a professional appearance. This screw is ideal for use