NA 109
DIN Standards Committee Petroleum and Natural Gas Industries
Standards
[CURRENT]
ASME B1.2
; ANSI B 1.2:1983
ASME B1.2
; ANSI B 1.2:1983
Gages and gaging for unified inch screw threads
Title (German)
Lehren zum Prüfen von UST-Zollgewinde