Rationale:
FIGURE 1 REDRAWN WITH FORMAT UPDATES AND EDITORIAL REVISIONS. NEW REQUIREMENTS PER AS1132 ADDED (EXIT END COUNTERSINK, BEARING FACE FLATNESS, CONVEXITY, AND ØL), NOTES 2 AND 4 COMBINED AND EDITED FOR CLARITY. HEAT TREAT CONTROL AND EXCEPTION FOR RECRYSTALLIZED MICROSTRUCTURE ADDED, TABLE 1 REFORMATTED, AND AS870 DASH NOS AND ØL ADDED, GENERAL EDITORIAL REVISIONS THROUGHOUT.
