4-20 x 5/16 Phillips Pan Plastite Alternative 48-2 Fully Threaded 18-8 SS Passivated And Wax 3SW188 while the indented design provides

while the indented design provides a secure grip

and mechanical applications

5/16-18 x 1 1/4" Ribbed Neck Carriage Bolt

The screw is 1 1/2 inches long and has a diameter of 6-32 inches

4-20 x 5/16 Phillips Pan Plastite Alternative 48-2 Fully Threaded 18-8 SS Passivated And Wax 3SW188 while the indented design provides4 20 x 5 16 Phillips Pan Plastite Alternative 48 2 Fully Threaded 18 8 SS Passivated And Wax: This screw is made of 18 8 stainless steel, which is resistant to corrosion and rust. It has a Phillips pan head with a 5 16 inch diameter and a 48 2 thread pitch. The screw is fully threaded and has a length of 4 inches. It is passivated and waxed for added corrosion resistance.