#2-56 x 3/8" ASTM F879 Hex Drive 18-8 Stainless Steel Button Socket Cap Screw / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.375 INCHES NOMINAL FASTENER LENGTH: 0.375 INCHES NOMINAL HEAD STYLE: C30 BUTTON HEAD DIAMETER: 0.636 INCHES MINIMUM AND 0.656 INCHES MAXIMUM HEAD HEIGHT: 0.185 INCHES MINIMUM AND 0.199 INCHES MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 5895015647999 NOMINAL THREAD DIAMETER: 2.00 INCHES WIDTH ACROSS FLATS: 0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM THREAD QUANTITY PER INCH: 56 PART NAME ASSIGNED BY CONTROLLING AGENCY: BUTTON SOCKET CAP SCREW MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC