1/4"-20 x 2-1/4" Grade 8 Plain Finish Hex Cap Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 2.25 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD DIAMETER: 0.437 INCHES NOMINAL NOMINAL THREAD DIAMETER: 20.00 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: CAP SCREWS;HEX BOLTS SPECIAL FEATURES: PLAIN;SIZE 0.25;END OF TURRET ROTATION SENSOR ASSEMBLY RACE MATERIAL: STEEL CORROSION RESISTING FASTENER THREAD SERIES DESIGNATOR: UNC