1/4"-20 x 2-1/4" ASTM F593 316 Stainless Steel Tap Bolt / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 2.250 INCHES NOMINAL FASTENER LENGTH: 2.250 INCHES NOMINAL HEAD STYLE: C1 HEXAGON WIDTH BETWEEN FLATS: 0.4375 INCHES NOMINAL END ITEM IDENTIFICATION: 2320-01-465-2174 NOMINAL THREAD DIAMETER: 0.250 INCHES THREAD QUANTITY PER INCH: 20 PART NAME ASSIGNED BY CONTROLLING AGENCY: STAINLESS STEEL TAP BOLT MATERIAL: STEEL CORROSION RESISTING OVERALL