1/2" Shoulder x 1/2" Shoulder Length x 3/8"-16 Black Oxide/Plain Finish Alloy Steel Socket Shoulder Bolt / THREAD CLASS: 3A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.625 INCHES NOMINAL FASTENER LENGTH: 1.14 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM END ITEM IDENTIFICATION: 5411015757079 NOMINAL THREAD DIAMETER: 0.375 INCHES NONSTANDARD THREAD PITCH DIAMETER: -0.291 TO 0.304 INCHES THREAD QUANTITY PER INCH: 16 PART NAME ASSIGNED BY CONTROLLING AGENCY: SHOULDER SCREW MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC