This document specifies definitions, dimensions and tolerances of parallel screw threads of M30 x 2, M25 x 2 and M18 x 1,5, for the connection of valves to medical and industrial gas cylinders. This document does not contain the connection requirements for: — mechanical strength; — gas tightness; — capability of repeated assembly and dismounting operations (this aspect is covered in ISO 13341).
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ISO 10286:2015 Gas cylinders — Terminology
ISO 5408:2009 Screw threads — Vocabulary
ISO 724:1993 ISO general-purpose metric screw threads — Basic dimensions
ISO 10286:2015 Gas cylinders — Terminology
ISO 5408:2009 Screw threads — Vocabulary
ISO 724:1993 ISO general-purpose metric screw threads — Basic dimensions