BS EN 148-1:1999 Respiratory protective devices - Threads for facepieces - Part 1: Standard thread connection

This British Standard is the English language version of EN 148-1:1999. This British Standard, having been prepared under the direction of the Sector Committee for Health and Environment, was published under the authority of the Standards Committee and comes into effect on 15 July 1999. — 12 p. — ISBN: 0 580 32263 7.
This European Standard is applicable to standard threads for respiratory protective devices. This standard does not apply to diving equipment and to positive pressure demand breathing apparatus.