DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM FIRST HOLE |
FASTENER LENGTH | 0.672 INCHES MINIMUM AND 0.704 INCHES MAXIMUM |
HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.078 INCHES MINIMUM AND 0.094 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL CORROSION RESISTING OVERALL |
NOMINAL THREAD DIAMETER | 0.190 INCHES |
SHANK UNTHREADED HOLE DIAMETER | 0.042 INCHES MINIMUM AND 0.062 INCHES MAXIMUM FIRST HOLE |
SHOULDER LENGTH | 0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | HEXAGONAL FIRST SHOULDER |
SHOULDER WIDTH ACROSS FLATS | 0.248 INCHES NOMINAL FIRST SHOULDER |
WIDTH BETWEEN FLATS | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.287 INCHES MINIMUM AND 0.307 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 32 |
THREAD SERIES DESIGNATOR | UNF |