Tapping screw pan head material and finish
Tapping screw pan head material and finish Tapping screw pan head can generally be made of stainless steel, carbon steel, titanium, aluminum, copper, brass. The most frequently used materials are carbon steel and stainless steel. Carbon steel pan head tapping screws are made of low carbon steel and have sufficient hardness for cutting or forming internal threads after heat treatment and surface hardening. Stainless steel self-tapping screws are generally made of 304HC, and some are made of 201, 316 stainless steel. Generally, the hardness required for cutting can be obtained after head and tooth decay. For carbon steel tapping screw pan head , the relationship between carburized depth, surface hardness, and core hardness is critical. If the carburized layer is too thin, the screwing effect of the screw is poor; if it is too thick, it will adversely affect its torsional strength and the toughness of the screw. The surface treatment of most carbon steel tapping sc...