DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.740 INCHES MINIMUM AND 3.760 INCHES MAXIMUM FIRST HOLE |
CONCENTRIC HOLE DEPTH | 2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM |
CONCENTRIC HOLE DIAMETER | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
COUNTERBORE DEPTH | 0.068 INCHES MINIMUM AND 0.093 INCHES MAXIMUM |
COUNTERBORE DIAMETER | 0.501 INCHES MINIMUM AND 0.503 INCHES MAXIMUM |
FASTENER LENGTH | 3.927 INCHES NOMINAL |
HEAD HEIGHT | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
MATERIAL | STEEL OVERALL |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
SHANK UNTHREADED HOLE DIAMETER | 0.096 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE |
WIDTH BETWEEN FLATS | 0.735 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
STYLE DESIGNATOR | COUNTERBORE UNTHREADED |
SURFACE TREATMENT | CADMIUM OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.849 INCHES MINIMUM |
THREAD QUANTITY PER INCH | 20 |
THREAD SERIES DESIGNATOR | UNF |