BOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS5643 (UNS S17400), .4375-20, UNJF-3A AS3171A

DOI: https://doi.org/10.4271/AS3171A

Issuing Committee: E-25 General Standards for Aerospace and Propulsion Systems

Publisher: SAE International

Pages: 3

Rationale: REVISE THREAD SPECIFICATION TO AS8879. REVISE LIGHTENING HOLE CONFIGURATION (ADD SECTION VIEW) TO ALLOW OPTIONAL SHAPE AT BOTTOM OF HOLE, DELETE .015 MAX RADIUS AT BASE OF WRENCH PAD, UPDATE FPI REQUIREMENTS, ADD SURFACE FINISH REQUIREMENTS TO BOLT HEAD, ADD AS3062 FOR THREAD RUNOUT, ADD MIN. BEARING DIA, DELETE METRIC DIMENSIONS, UPDATE ANSI Y14.5-1973 TO ANSI Y14.5M- 1982, GENERAL EDITORIAL UPDATE, REFERENCES UDATED AND FIGURE 1 REDRAWN.