Wafer Head Screw Undercut Shoulder Machine Threaded Custom

Wafer head screw is the screw with a thin head. The head is just like a washer. Wafer head screw usually used on electronics or plastic. The undercut is the slot under the wafer head, it makes the screw not easy to lose. Ever Hardware provides custom-made fasteners and customizable packaging.

In manufacturing, an undercut is a special type of recessed surface. In turn, it refers to a recess in a diameter. In machining, it refers to a recess in a corner. In molding, it refers to a feature that cannot be molded using only a single pull mold. In printed circuit board, construction it refers to the portion of the copper that is etched away under the photoresist. In welding, it refers to undesired melting and removal of metal near the weld bead. On turned parts, an undercut is also known as a neck. They are often used at the end of the threaded portion of a shaft or screw to provide clearance for the cutting tool, and also referred to as thread relief in this context. A rule of thumb is that the undercut should be at least 1.5 threads long and the diameter should be at least 0.015 in (0.38 mm) smaller than the minor diameter of the thread.

Shoulder screw is a screw with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolt. 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 bolt also used to attach stripper plates. The socket head enables high torque fastening with limited clearance.