3/8" x 1.000" OD Thru-Hardened Plain Finish Steel USS General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 1 RECTANGULAR HOLE DIAMETER: 0.433 INCHES MINIMUM AND 0.453 INCHES MAXIMUM PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 0.064 INCHES MINIMUM AND 0.104 INCHES MAXIMUM OVERALL DIAMETER: 0.993 INCHES MINIMUM AND 1.030 INCHES MAXIMUM END ITEM IDENTIFICATION: 2355-01-532-2174 - JOINT EOD RAPID RESPONSE VEHICLE (JERRV) MATERIAL: STEEL OVERALL SURFACE TREATMENT: OIL OVERALL