Pan Washer Shoulder Screw Cross Plastic Tapping Thread

Pan washer shoulder screw is the screw with a pan washer head and a shoulder under the head. The screw usually used on plastics or other electronics. The pan washer head design could possibly be the most versatile head design available. It combines the advantages of the pan head but has a washer built on to the head to increase head diameter and prevent overdriving in softwoods while providing a maximum bearing surface. These fasteners have Square-Phillips combo recess drive designed to offer the dependability of a square drive recess with the convenience and after-market serviceability of a Phillips drive. In addition, they have coarse thread design for superior holding power while reducing splitting or crumbling of the material, allowing the fastener to install rapidly with full thread engagement after just one revolution. The thread surface is nearly perpendicular to the screw axis, providing great resistance to pullout. Ever Hardware provides custom-made fasteners and customizable packaging.

Shoulder screw is a screw with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper screw. The cylindrical shoulder that allows for the rotation of attached parts like pulleys, gears, moving parts of engines and mechanical assemblies, and rolling wheels. Shoulder screw also used to attach stripper plates. The socket head enables high torque fastening with limited clearance.

A self-tapping screw is a screw that can tap its own hole as it is driven into the material. 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.