M10 x 20mm OD DIN 125 Grade HV200 Yellow Zinc Finish Steel Type A General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 1 RECTANGULAR HOLE DIAMETER: 10.5 MILLIMETERS NOMINAL PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 2.0 MILLIMETERS NOMINAL OVERALL DIAMETER: 20.0 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: MRAP PART NAME ASSIGNED BY CONTROLLING AGENCY: WASHER,FLAT HARD M 10X28X2.80" SPECIAL FEATURES: HV200/125 HARDENED FLAT WASHER COLOR: YELLOW OVERALL MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL