M12 x 24mm OD DIN 125 Grade HV200 Zinc Finish Steel Type A General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 1 RECTANGULAR HOLE DIAMETER: 13.0 MILLIMETERS NOMINAL PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 2.5 MILLIMETERS NOMINAL OVERALL DIAMETER: 24.0 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: MRAP BUFFALO MK2A2; MRAP - COUGAR CAT1 A2; MRAP - COUGAR CAT2 A1 SPECIAL FEATURES: M12 X 13MM ID X 24MM OD; HV200/125 HARDENED FLAT WASHER MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL