M10-1.5 x 16mm ISO 7380 Hex Drive Class 10.9 Zinc Finish Alloy Steel Button Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 1.50 INCHES WIDTH ACROSS FLATS: 6.0 MILLIMETERS NOMINAL PART NAME ASSIGNED BY CONTROLLING AGENCY: BUTTON HEAD SOCKET CAP SCREW SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: UNC