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About This Item

 

Full Description

Specifies requirements for British Association (BA) screw threads in sizes 0 BA (6 mm diameter) to 25 BA (0.25 mm diameter) inclusive. It gives information on the screw thread system, including tolerances, deviations, symbols used for the screw thread parameters, and designation, together with requirements for associated gauges and gauging practices used for the verification of the screw threads for sizes from 0 BA to 10 BA inclusive. Appendices give the basis of the tabulated values, notes on the pitch diameter equivalent of pitch and angle errors, and notes on the verification of screw threads.
 

Document History

  1. AS 2829-1986

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    British Association (BA) screw threads and associated gauges and gauging practice

    • Most Recent
  2. AS B46-1953


    British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A.

    • Historical Version
  3. AS B46-1941


    British Association (B.A.) screw threads with tolerances for sizes 0 B.A to 16 B.A

    • Historical Version
  4. AS B46-1940


    British Association (B.A.) screw threads with tolerances for Nos. 0 to 15 B.A.

    • Historical Version
  5. AS B46-1929


    British Association (B.A.) screw threads with tolerances

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. AS 2829-1986 AMDT 1

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    British Association (BA) screw threads and associated gauges and gauging practice