Rationale: AS81935/4 IS BEING REVISED TO FOR GENERAL FORMATTING, ADDED PH13-8MO BALL OPTION AND TYPE “A” LINER OPTION TO PART NUMBER SUFFIX. MOST SIGNIFICANT CHANGE WAS TO ADD A -03A SIZE THAT FEATURES DIMENSIONAL CONTROLS ON KEYWAY LENGTH PREVENTING THE KEYWAY FROM BREAKING INTO THE BODY HEAD I.D. CHAMFER.