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BS 1580-1 & 2

62nd Edition, September 15, 1962

Complete Document

Unified Screw Threads Parts 1 and 2: Diameters Quarter of an Inch and Larger

Includes all amendments and changes through Reaffirmation Notice , April 15, 1998


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Superseded By: BS 1580-1

EN
Additional Comments:
W/D S/S BY BS 1580-1 * INCLUDES AMENDMENT 2
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Product Details:

  • Revision: 62nd Edition, September 15, 1962
  • Published Date: April 15, 1998
  • Status: Superseded By:
  • Superseded By: BS 1580-1
  • Document Language: English
  • Published By: British Standards Institution (BSI)
  • Page Count: 109
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Unified coarse thread series UNC 1⁄4 in to 4 in diameter; Unified fine thread series UNF 1⁄4 in to 11⁄2 in; Unified extra fine thread series UNEF 1⁄4 in to 111⁄16 in. Standard constant pitch series for a graduated system of diameter/pitch combinations. Basic and design forms. Tables of basic dimensions, limits and tolerances for all diameter/pitch combinations in UNC, UNF, UNEF and standard constant pitch series given for the three classes of internal and external threads. Bases of tolerances for Unified screw threads; five sizes below 1⁄4 in diameter for attachment purposes and for general use in aircraft appended. Evolved through international discussions between UK, Canada, USA. In accord with corresponding sections of American standard ASA B1.1-1960.