This standard applies to thread plug gauges and thread ring gauges (hereinafter referred to as thread gauges) among JIS B 0251, JIS B 0254, JIS B 0255, and other similar gauges for parallel threads with single threads and symmetrical threads. ).
JIS B 0261:2004 history
2020JIS B 0261:2020 Parallel screw threads gauges -- Measuring method
2004JIS B 0261:2004 Parallel screw thread gauges -- Measuring method of gauges
1992JIS B 0261:1992 Measuring method for parallel screw gauges