BSI - BS 919-1
Screw gauge limits and tolerances - Part 1: Specification for gauges for screw threads of unified form
|Publication Date:||30 November 2007|
|ICS Code (Special screw threads):||21.040.30|
and not go screw plugs, rings, and calipers; adjustable type setting plugs for screw rings and calipers; check plugs for solid screw rings; and not go plain plugs and calipers. Inspection of product threads, use of various gauges, inspection of product threads by direct measurement, gauge tolerance tables. Appendices: illustration of tolerance zones, effective diameter equivalent of pitch and angle error, gauges for plated screw threads, setting to the size adjustable screw ring gauges, determining limiting sizes of gauges and setting plugs, comparison between British and American gauges.