GENERAL REVISION. REVISE LIGHTENING HOLE CONFIGURATION TO ALLOW OPTIONAL SHAPE, ADD EDGE DISTANCE EXCEPTION FOR HEAD MARKING, UPDATE THREADS TO AS8879, UPDATE SURFACE FINISH REQUIREMENTS, ADD AS3062 FOR INCOMPLETE THREAD REQUIREMENTS, ADD POSITION REQUIREMENTS FOR DRILLED HOLES, ADD DATUM REQUIREMENTS FOR -04 THRU -18 LENGTHS (NEW NOTE 1), UPDATE TO ANSI Y14.5M-1982, DELETE .015 MAX RADIUS AT BASE OF WRENCH PAD, DELETE HARDNESS NOTE, DIM K FOR -45 REVISED TO CONFORM TO STANDARD PRACTICE, AND FIGURE 1 REDRAWN.