CPC Subgroup
F16B 33/06 Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure
Full Title
Features common to bolt and nut > Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure
F16B 33/06 Features common to bolt and nut > Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure