M6 x 12mm OD DIN 125 Grade HV300 Zinc Finish Steel Type A General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 2 BLANK RECTANGULAR HOLE DIAMETER: 6.4 MILLIMETERS NOMINAL PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 1.6 MILLIMETERS NOMINAL OVERALL DIAMETER: 12.0 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: MRAP BUFFALO MK2A2; MRAP - COUGAR PART NAME ASSIGNED BY CONTROLLING AGENCY: WASHER, FLAT HARD SPECIAL FEATURES: M6 X 12 X 1.4 BLUE ZINC HARDENED FLAT WASHER COLOR: BLUE OVERALL MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL