BSI - BS 919-2
Screw Gauge Limits and Tolerances Part 2: Gauges for Screw Threads of Whitworth and BA Forms
|Publication Date:||9 November 1971|
|ICS Code (Inch screw threads):||21.040.20|
Gauges for general and reference use, and setting plugs for screw ring and thread caliper gauges. Tolerances apply to gauges for screw threads of Whitworth and BA forms. General requirements, tables of tolerances; appendices on conventional illustration of tolerance zones, effective diameter equivalent of pitch and angle errors, thread form of not go effective diameter gauges and setting plugs, examples of the use of tolerance tables.