5/16" Hot Dipped Galvanized Finish Iron - Malleable Beveled Washer / HOLE DIAMETER: 0.380 INCHES NOMINAL FLAT SIDE DISTANCE BETWEEN THICK AND THIN EDGES: 0.500 INCHES NOMINAL MINOR THICKNESS: 0.150 INCHES NOMINAL MAJOR THICKNESS: 0.310 INCHES NOMINAL OVERALL WIDTH: 1.000 INCHES NOMINAL END ITEM IDENTIFICATION: TRACK TRACTOR NSN 2320-01-564-6882 PART NAME ASSIGNED BY CONTROLLING AGENCY: WASH,BEV,SPL .31X.72X.12 SPL STYLE DESIGNATOR: 19 BEVEL