Historical

SAE AS8879A

Name: SAE AS8879A PDF | Request Standard
SKU: cde12996a09a

Screw Threads - UNJ Profile, Inch

Standard by SAE International, 1999-01-01

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SAE AS8879A.PDFSecure PDF
SAE AS8879A.PDFOnline Access

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Language: English
License Type: Single User
Updates: Not Included

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Language: English
License Type: Enterprise / Multi User
Updates: Included

About This Item

This SAE Aerospace Standard (AS) specifies the characteristics of the UNJ profile inch series of screw threads, to include a mandatory controlled radius of 0.18142P to 0.15011P at the root of the external thread and with a minor diameter of both external and internal threads increased to provide a basic thread height of 0.5625H in order to accommodate the external thread maximum root radius. The following detailed requirements are included: a UNJ basic profile and design profiles. b Standard series of diameter-pitch combinations for nominal thread diameters from .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 Acceptance and verification requirements. g Tables for selected diameter-pitch combinations for aerospace screws, bolts, nuts, shaft and bearing retaining screw threads, fluid fittings, and other component thread sizes. h Tables for UNJ screw threads limiting dimensions and tolerances. i Symbols for UNJ thread dimensions and tolerances.

SKU: cde12996a09a

Publication Date: 1999-01-01

Standard Status: historical

Publisher: SAE International

Document Type: Aerospace Standard

Subject: Pitch, Production control, Manufacturing processes, Safety critical systems, Screws, , , ,

Official SAE: Doi link

New Version Available: AS8879D (2024-04-05)
Previous Version: AS8879C (2003-01-15)
Previous Version: AS8879B (2001-08-01)
This Version: AS8879A (1999-01-01)
Previous Version: AS8879 (1996-10-01)

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