M8-1.25 x 16mm ISO 7380 Hex Drive Class 10.9 Black Oxide or Plain Finish Alloy Steel Button Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 16.0 MILLIMETERS NOMINAL HEAD STYLE: C30 BUTTON INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 2320-01-494-7611,LAV-C2A1;2355-01-539-3589,LAV-C2A2;2320-01-494-7614,LAV-RA1;2355-01-539-3601,LAV-RA2;2320-01-494-7616,LAV-ATA1;2355-01-539-3618,LAV-ATA2;2320-01-494-7618,LAV-LA1;2355-01-539-3634,LAV-LA2;2320-01-494-7621,LAV-MA1;2355-01-539-3578,LAV-MA2;5865-01-383-3540,MEWSS;5865-01-537-5531,MEWSS;2320-01-494-7606,LAV-25A1;2355-01-539-3639,LAV25-A2 NOMINAL THREAD DIAMETER: 8.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 16.0 EXTERNAL THREAD TOLERANCE CLASS: 10.9 PART NAME ASSIGNED BY CONTROLLING AGENCY: SCREW,CAP,PLAIN BUTTON SOCKET SPECIAL FEATURES: M8-1.25 X 16MM ISO 7380 CLASS 10.9;FINISH: PLAIN;THREAD: COARSE;DRIVE SIZE: 5MM MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: M