1/2" Shoulder x 1/2" Shoulder Length x 3/8"-16 316 Stainless Steel Socket Shoulder Bolt / THREAD CLASS: 3A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.566 INCHES MINIMUM AND 0.590 INCHES MAXIMUM FASTENER LENGTH: 1.090 INCHES MINIMUM AND 1.130 INCHES MAXIMUM HEAD STYLE: C66 KNURLED NO. 1 HEAD DIAMETER: 0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM HEAD HEIGHT: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM SHOULDER DIAMETER: 0.4960 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM SHOULDER LENGTH: 0.402 INCHES MINIMUM AND 0.412 INCHES MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 3930015999978 NOMINAL THREAD DIAMETER: 0.375 INCHES WIDTH ACROSS FLATS: 0.2500 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM THREAD QUANTITY PER INCH: 16 SHOULDER SHAPE: ROUND OVERALL PART NAME ASSIGNED BY CONTROLLING AGENCY: SCREW,SHOULDER MATERIAL: STEEL COMP 316 OVERALL THREAD SERIES DESIGNATOR: UNC