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.Cross References:BS 21BS 1127:Part 1BS 1127:Part 2BS 1127:Part 3BS 1580:Parts 1 & 2BS 1580:Part 3BS 2779BS 3643:Part 1