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BS 3643-2

81st Edition, December 31, 1981

Complete Document

ISO Metric Screw Threads: Selected Limits of Size

Includes all amendments and changes through Amendment 1, June 1986


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Product Details:

  • Revision: 81st Edition, December 31, 1981
  • Published Date: June 1986
  • Status: Historical
  • Document Language: English
  • Published By: British Standards Institution (BSI)
  • Page Count: 46
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Specifies the fundamental deviations, tolerances and limits of size for tolerance classes 4H, 5H, 6H and 7H for internal threads and 4h, 6g, and 8g for external threads for coarse pitch 1 mm to 68 mm diameter, fine pitch 1 mm to 33 mm diameter and constant pitch 8 mm to 300 mm diameter.