What is BS 1127-5 - Hexagonal die-nuts about?
BS 1127-5 is the fifth part of the BS 1127 multi-series that discusses screwing dies and die-nuts.
BS 1127-5 specifies the general dimensions of hexagonal die-nuts 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.
Who is BS 1127-5 - Hexagonal die-nuts for?
BS 1127-5 on screwing dies and die-nuts is useful for:
- Manufacturers of die-nuts
- Designers of die-nuts
- Quality control personnel
Why should you use BS 1127-5 - Hexagonal die-nuts?
Circular screwing dies are specified for certain thread forms in ISO 2568, ISO 4230 and ISO 4231. For certain sizes of these threads, it is convenient for some purposes to use hexagonal die-nuts instead of circular dies and, for purposes connected with their manufacture and use, it is desirable that certain dimensions of these die-nuts should be standardized.
The dimensions and tolerances provided in BS 1127-5 enable you to design and produce hexagonal die-nuts with minimum deviations and improve their overall build quality.
