BS EN 4163 is a European standard on aerospace series that covers 100° countersunk normal head screws with offset cruciform recess and coarse tolerance normal shank in cadmium plated alloy steel.
BS EN 4163 specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated.
BS EN 4163 on 100° countersunk normal head screws is useful for:
Also known as a flat-heat screw, a countersunk screw is a type of screw that's designed to rest flush with the object or surface in which it's inserted. They are called “countersunk screws” because they “sink” into objects and surfaces. They feature a flat head that tapers along the shaft.
Cadmium Electroplating (Nadcap Accredited) Electroplated cadmium is a robust and versatile metallic coating. Cadmium is a soft white metal that, when plated onto steel, cast iron, malleable iron, copper, and powdered metal, functions as a "sacrificial coating," corroding before the substrate material.
BS EN 4163 specifies the characteristics of 100° countersunk normal head screws with offset cruciform recess and coarse tolerance normal shank in cadmium plated alloy steel. This can benefit you as this information is used in various aerospace applications. This can help you increase safety in operations.
EN 4163:2016