Norm
[AKTUELL]
BS A 401-420
BS A 401-420
Specification for screws, pan and 100° countersunk head, hexalobular drive recess (unified threads below 1/4 inch) in various materials
Titel (englisch)
Specification for screws, pan and 100° countersunk head, hexalobular drive recess (unified threads below 1/4 inch) in various materials