DIN 3852-21:2016-09 Stud ends and ports of fittings, valves and plug screws - Part 21: Dimensions for pipe thread according to DIN EN ISO 228-1 and O-ring sealing
2016DIN 3852-21:2016-09 Stud ends and ports of fittings, valves and plug screws - Part 21: Dimensions for pipe thread according to DIN EN ISO 228-1 and O-ring sealing