5/16" Yellow Zinc Finish Medium Split Lock Washer / END ITEM IDENTIFICATION: TOW TRACTOR, AIRCRAFT ASSEMBLY, DRIVE SHAFT ASSY, PARK BRAKE; TOW TRACTOR, A/C (P/N 4JPAV, PCC 6J9) PART NAME ASSIGNED BY CONTROLLING AGENCY: 5/16 IN YELLOW ZINC PLATED MEDIUM SPLIT LOCK WASHER MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL STYLE DESIGNATOR: 108 SPLIT HELICAL-RIGHT HAND