SAE AS8879 Screw Threads - Unj Profile, Inch Controlled Radius Root With Increased Minor Diameter
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Product Code:SAE AS8879
Title:Screw Threads - Unj Profile, Inch Controlled Radius Root With Increased Minor Diameter
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: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.
Title:Screw Threads - Unj Profile, Inch Controlled Radius Root With Increased Minor Diameter
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: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.
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