M16-1.5 x 50mm DIN 961 Class 8.8 Zinc Finish Hex Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 50.0 MILLIMETERS NOMINAL HEAD STYLE: C1 HEXAGON NOMINAL THREAD DIAMETER: 16.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 1.5 PART NAME ASSIGNED BY CONTROLLING AGENCY: HEX CAP SCREW MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: UNF