M18-1.5 DIN 439B Class 04 Zinc Finish Steel Jam Nut / THREAD CLASS: 6H THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 8.4 MILLIMETERS MINIMUM AND 9.0 MILLIMETERS MAXIMUM END ITEM IDENTIFICATION: 2355-01-567-4930 TRUCK, BOMB SERVICE (BUFFALO ROUTE CLEARANCE VEHICLE) WIDTH ACROSS FLATS: 26.2 MILLIMETERS MINIMUM AND 27.0 MILLIMETERS MAXIMUM THREAD SERIES: M NOMINAL THREAD SIZE: 18.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 1.5 BEARING SURFACE TYPE: CHAMFERED THREAD TOLERANCE CLASS: 6H INTERNAL PART NAME ASSIGNED BY CONTROLLING AGENCY: JAM NUT MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL