HB 4273-1989 钢丝螺套用螺纹的螺纹量规及标准螺孔环的技术条件

钢丝螺套用内螺纹的螺纹量规及标准螺孔环通用规范
Technical specification for internal screw gauge for wire thread insert and standard tapping ring

2004-09-01

钢丝螺套用标准螺孔环的校通－损螺纹塞规 T—S
Calibration of the standard tapping ring for wire thread insert -- Worn thread plug gauge T -- S

2004-09-01

钢丝螺套用标准螺孔环的校通－止螺纹塞规 T—Z
Calibration of the standard tapping ring for wire thread insert -- No -- go thread plug gauge T -- Z

2004-09-01

钢丝螺套用标准螺孔环的校通－通螺纹塞规 T—T
Calibration of the standard tapping ring for wire thread insert -- Go thread plug gauge T -- T

2004-09-01