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SAE AS8879 Rev D

Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter
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SAE AS8879 Rev D

Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter

PUBLISH DATE 2004
PAGES 25
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This SAE Aerospace Standard (AS) specifies the characteristics of screw threads - UNJ profile inch series, including a mandatory controlled radius as specified in Table 1 at the root of the external thread. The minor diameter of both external and internal threads provides a basic thread height of .5625H to accommodate the external thread maximum root radius. The following detailed design requirements are included: a Screw threads - UNJ basic profile and design profiles. b Standard series of diameter-pitch combinations for nominal thread diameters from 0.060 to 6.000 inches. c Standard thread classes and form tolerances. d Formulae for thread dimensions and tolerances. e Method of designating UNJ threads. f Tables for selected diameter-pitch combinations for close tolerance mechanical thread applications. g Tables for screw thread - UNJ profile thread limit dimensions.
SDO SAE: SAE International
Document Number AS8879
Publication Date Aug. 9, 2004
Language en - English
Page Count 25
Revision Level D
Supercedes
Committee
Publish Date Document Id Type View
Aug. 9, 2004 AS8879D Revision
Jan. 15, 2003 AS8879C Revision
Aug. 1, 2001 AS8879B Revision
Jan. 1, 1999 AS8879A Revision
Oct. 1, 1996 AS8879 Revision