British Standard Fine

Written by Jerry Ratzlaff on . Posted in Fastener

A thread form based upon the British Standard Whitworth form but with a finer thread (more threads per inch for a given diameter). This thread form was first introduced in 1908, the thread form is specified in BS 84: 1956.


  • BSF - British Standard Fine


  • BSI Standards
    • BS 84:1956 - Specification for parallel screw threads of Whitworth form