1/2" x 1.062" OD Low Carbon Zinc Finish Steel SAE General Purpose Flat Washer / CROSS-SECTIONAL SHAPE STYLE: 1 RECTANGULAR HOLE DIAMETER: 0.526 INCHES MINIMUM AND 0.546 INCHES MAXIMUM PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 0.074 INCHES MINIMUM AND 0.121 INCHES MAXIMUM OVERALL DIAMETER: 1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM END ITEM IDENTIFICATION: 2355-01-532-2174, JOINT EOD RAPID RESPONSE VEHICLE (JERRV) PART NAME ASSIGNED BY CONTROLLING AGENCY: FLAT WASHER MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633, SC1. TYPE III ASSN STD SINGLE TREATMENT RESPONSE OVERALL