• Product Item : S10KA001
• Category： Self-Tapping Screw
• Available Material: Carbon steel, Stainless Steel, Brass, etc. OEM according to your request
• Head types: Hex, Pan, Truss, Countersunk, Button，Flat, Oval, etc. Drive types: Allen hex socket, cross recess, torx, slotted, etc. OEM according to your request
• Thread size: ST1, ST2, ST3, M1, M2, M3, etc. Length: 6mm, 8mm, 10mm, 1/4'', 3/8'',1/2'',etc. OEM according to your request
• Finishing: Blue Zinc plated, White Zinc plated, Nickel plated, Black Oxide, Decromet, Plain, Customized.

For hard substrates such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a regular machine screw cannot tap its own hole in a metal substrate, a self-tapping one can (within reasonable limits of substrate hardness and depth).
For softer substrates such as wood or soft plastics, the self-tapping ability can come simply from a tip that tapers to a gimlet point (in which no flute is needed). Like the tip of a nail or gimlet, such a point forms the hole by displacement of the surrounding material rather than any chip-forming drilling/cutting/evacuating action.