5/8"-18 x 2" Phosphate and Oil Finish SAE J429 Grade 8 Hex Flange Bolt / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.500 INCHES NOMINAL FASTENER LENGTH: 1.920 INCHES MINIMUM AND 2.060 INCHES MAXIMUM HEAD STYLE: C7 HEXAGON EXTENDED WASHER HEAD HEIGHT: 0.620 INCHES NOMINAL WIDTH BETWEEN FLATS: 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM EXTENDED WASHER DIAMETER: 1.330 INCHES NOMINAL EXTENDED WASHER THICKNESS: 0.100 INCHES NOMINAL END ITEM IDENTIFICATION: 2320-01-519-8173 COUGAR 4X4 EOD VARIANT; 2355-01-532-2174 JOINT EOD RAPID RESPONSE VEHICLE (JERRV) 4X4 EOD VARIANT; 2355-01-532-2159 JOINT EOD RAPID RESPONSE VEHICLE (JERRV) 6X6 ENGINEER VARIANT; 2320-01-519-8172 COUGAR 6X6 ENGINEER NOMINAL THREAD DIAMETER: 0.625 INCHES HOLE TYPE: THREADED THREAD QUANTITY PER INCH: 11 HOLE CONFIGURATION STYLE: E4 HEXAGON CORNERS SHOULDER SHAPE: ROUND OVERALL PART NAME ASSIGNED BY CONTROLLING AGENCY: BOLT, HH 5/8 -24X2 MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC