FASTENER LENGTH | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | HEADLESS (SETSCREW) |
INTERNAL DRIVE STYLE | HEXAGON |
MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL OVERALL |
NOMINAL THREAD DIAMETER | 0.312 INCHES |
POINT STYLE | CUP |
WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
THREAD DIRECTION | RIGHT-HAND |
THREAD CLASS | 3A |
THREAD LENGTH | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
THREAD SERIES DESIGNATOR | UNC |
THREAD QUANTITY PER INCH | 18 |