1/4"-20 x 1-3/4" ASTM F593 18-8 Stainless Steel Round Head Carriage Bolt / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 1.750 INCHES NOMINAL END ITEM IDENTIFICATION: F-15SA NOMINAL THREAD DIAMETER: 0.250 INCHES THREAD QUANTITY PER INCH: 20 PART NAME ASSIGNED BY CONTROLLING AGENCY: S/S CARRIAGE BOLT MATERIAL: STEEL COMP 304 OVERALL THREAD SERIES DESIGNATOR: UNC