What is BS EN 4138 - Pan head screws about ?
BS EN 4138 is a European standard on aerospace series that covers pan head screws with offset cruciform recess and coarse tolerance normal shank in cadmium plated alloy steel.
BS EN 4138 specifies the characteristics of screws, pan head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated.
Who is BS EN 4138 - Pan head screws for ?
BS EN 4138 on pan head screws is useful for: 
- Aerospace parts manufacturers
- Pan head screws manufacturers
Why should you use BS EN 4138 - Pan head screws ?
Pan head screws are a common head type of non-countersunk screw head used in wood screws, self-tapping screws, self-drilling screws, and machine screws. They have wide heads, a flat bearing surface, high vertical, chamfered, or curved sides, and a flat or slightly domed top surface with a recessed socket
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 4138 specifies the characteristics of pan 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.
