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    BS 21:1985 [ Secure PDF ]

    Specification for pipe threads for tubes and fittings where pressure-tight joints are made on the threads (metric dimensions)

    standard published 09/30/1985 by British Standards Institution

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Full Description

Range of threads from 1/16 to 6, together with thread forms, dimensions and tolerances, designations; includes appendices for recommended gauging systems and methods of use of gauges. Requirements for jointing threads for taper external threads, for assembly with either tapes or parallel internal threads and for longscrew threads for longscrews specified in BS 1387.

Cross References:
BS 919:Part 2
BS 1387
BS 2779


Partially replaced by BS EN 10226-1:2004.

Incorporates the following:
AMD 6633 published 21 December 1990

Product Details:

Published:
09/30/1985
ISBN(s):
0580145565
Number of Pages:
20
Product Code(s):
00141824, 00141824
Note:
This product is unavailable in United Kingdom

Document History

  1. BS EN 10226-1:2004


    Pipe threads where pressure tight joints are made on the threads. Taper external threads and parallel internal threads. Dimensions, tolerances and designation

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  2. BS 21:1985

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    Specification for pipe threads for tubes and fittings where pressure-tight joints are made on the threads (metric dimensions)

    • Historical Version

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