3/8" x 0.812" OD Thru-Hardened ECOGUARD® Finish Steel SAE General Purpose Flat Washer / HOLE DIAMETER: 0.375 INCHES NOMINAL THICKNESS: 0.072 INCHES NOMINAL OVERALL DIAMETER: 0.812 INCHES NOMINAL END ITEM IDENTIFICATION: LOGISTGICS SUPPORT VESSEL PART NAME ASSIGNED BY CONTROLLING AGENCY: 3/8 SAE ECOGUARD (TRADEM)COATED THRU HARD HIGH STRENGTH FLAT WASHER. MATERIAL: STEEL OVERALL