BS 1127-5:1990

This standard BS 1127-5:1990 Screwing dies and dienuts is classified in these ICS categories:

• 25.100.50 Taps and threading dies

This International Standard specifies the general dimensions of hexagonal dienuts for certain sizes of ISO metric threads (coarse and fine pitch series – see ISO 68 and ISO 261), ISO inch threads (UNC and UNF series – see ISO 68 and ISO 263), and pipe threads (G and R series – see ISO 7-1 and ISO 228-1), as well as the non-preferred thread series BSW, BSF and BA.

General dimensions of dienuts for certain sizes of ISO thick coarse and fine pitch series threads, ISO inch UNC and UNF thread, pipe threads G and R series, and the non-preferred thread series BSW, BSF and BA.