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BS 21

85th Edition, September 30, 1985

Complete Document

Pipe Threads for Tubes and Fittings Where Pressure-Tight Joints Are Made on the Threads (Metric Dimensions)

Includes all amendments and changes through Reaffirmation Notice , March 1, 2013


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Superseded By: BS EN 10226-1

EN
Additional Comments:
W/D S/S BY BS EN 10226-1 THRU -3
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Referenced Items:

BS 1387
BS 2779
BS 919-1
BS 919-2

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Description / Abstract:

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.