CONCENTRIC HOLE DIAMETER | 0.164 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
COUNTERBORE DIAMETER | 0.515 INCHES NOMINAL |
COUNTERBORE DEPTH | 0.120 INCHES NOMINAL |
FASTENER LENGTH | 1.150 INCHES MINIMUM AND 1.180 INCHES MAXIMUM |
HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM |
HEAD STYLE | SQUARE |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL COMP 4140 OVERALL |
NOMINAL THREAD DIAMETER | 0.375 INCHES |
SPECIAL FEATURES | COUNTERBORE AT THD END 0.247 IN. MIN 0.253 IN. MAX DIA 0.200 IN. DEEP |
WIDTH BETWEEN FLATS | 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM |
STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.500 INCHES MINIMUM |
THREAD QUANTITY PER INCH | 24 |
THREAD SERIES DESIGNATOR | UNF |