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BS 4084

1996 Edition, August 15, 1996

Complete Document

Aerospace - UNJ Threads, with Controlled Root Radius, for Aerospace - Inch Series

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Detail Summary

Superseded By: BS A 346

Additional Comments:
W/D S/S BY BS A 346
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Product Details:

  • Revision: 1996 Edition, August 15, 1996
  • Published Date: August 15, 1996
  • Status: Superseded By:
  • Superseded By: BS A 346
  • Document Language: English
  • Published By: British Standards Institution (BSI)
  • Page Count: 42
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This International Standard specifies the characteristics of inch series UNJ threads with controlled root radius.

It determines the basic triangular profile for this type of thread and gives a system for designating the diameter/pitch combinations. For all diameters 0,060 in to 6,000 in, it offers in the form of tables the basic dimensions and tolerances for a selection of diameter/pitch combinations. It also provides the method of calculation for the dimensions and tolerances for any diameter/pitch combination not given in the tables, including threads with a diameter in excess of 6,000 in.

NOTE 1 Pending publication of the International Standard relating to limit gauges referred to in the footnote in clause 7, special care must be taken to ensure that the dimensions and tolerances specified in this International Standard are confirmed by alternative means.

This International Standard applies primarily to the threads of inch series aerospace fasteners.