DEPARTURE FROM CITED DESIGNATOR | AS MOD BY LOCKING FEATURE |
FASTENER LENGTH | 2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM |
HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | HEADLESS (SETSCREW) |
INTERNAL DRIVE STYLE | HEXAGON |
LOCKING FEATURE | PELLET OR STRIP THREADS |
MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
MATERIAL | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1 STYLE |
POINT STYLE | FLAT |
WIDTH ACROSS FLATS | 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM |
THREAD SERIES DESIGNATOR | UNF |
THREAD QUANTITY PER INCH | 20 |