2" x 4.500" OD Low Carbon Yellow Zinc Finish Steel USS General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 1 RECTANGULAR HOLE DIAMETER: 2.115 INCHES MINIMUM AND 2.170 INCHES MAXIMUM PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 0.153 INCHES MINIMUM AND 0.213 INCHES MAXIMUM OVERALL DIAMETER: 4.490 INCHES MINIMUM AND 4.545 INCHES MAXIMUM END ITEM IDENTIFICATION: MRAP - COUGAR SPECIAL FEATURES: LOW CARBON STEEL COLOR: YELLOW OVERALL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMATE ZINC OVERALL