5/8"-11 x 2-1/4" ASTM F593 316 Stainless Steel Tap Bolt / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 2.110 INCHES MINIMUM AND 2.310 INCHES MAXIMUM FASTENER LENGTH: 2.170 INCHES MINIMUM AND 2.310 INCHES MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM END ITEM IDENTIFICATION: MRAP - COUGAR NOMINAL THREAD DIAMETER: 0.625 INCHES THREAD QUANTITY PER INCH: 11 PART NAME ASSIGNED BY CONTROLLING AGENCY: 0.625-11X2.25, HEX TAP BOLT, MATERIAL IS 316 STAINLESS STEEL MATERIAL: STEEL CORROSION RESISTING OVERALL SURFACE TREATMENT: PASSIVATE OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL THREAD SERIES DESIGNATOR: UNC