ISO-228-1 › Pipe threads where pressure-tight joints are not made on the threads -- Part 1: Dimensions, tolerances and designation
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DOD ADOPTION 1 - June 30, 2004
This part of ISO 228 specifies the requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes 1/16 to 6 inclusive. Both internal and external threads are parallel threads, intended for the mechanical assembly of the component parts of fittings, cocks and valves, accessories, etc.
These threads are not suitable as jointing threads where a pressure-tight joint is made on the thread. If assemblies with such threads must be made pressure-tight, this should be effected by compressing two tightening surfaces outside the threads, and by interposing an appropriate seal.
To find similar documents by classification:
21.040.30 (Special screw threads Including miniature screw threads, pipe threads, etc.)
To find similar documents by Federal Supply Class Code:
FSC Standardization Area FACR (Facilities Engineering and Design Requirements)
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Document Number
ISO 228-1:2000
Revision Level
4TH EDITION
Status
Current
Publication Date
Sept. 1, 2000
Committee Number
ISO TC 5/SC 5