#6 x 0.375" OD Aluminum Large OD General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 2 BLANK RECTANGULAR HOLE DIAMETER: 0.144 INCHES MINIMUM AND 0.157 INCHES MAXIMUM PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 0.024 INCHES MINIMUM AND 0.038 INCHES MAXIMUM OVERALL DIAMETER: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM END ITEM IDENTIFICATION: LAUNCH CONTROL PANEL(LCP)MK 422 MOD 2 PART NAME ASSIGNED BY CONTROLLING AGENCY: FLAT WASHER MATERIAL: ALUMINUM ALLOY 2024 OVERALL