AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | 88044 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.468 INCHES MINIMUM |
FASTENER LENGTH | 1.406 INCHES NOMINAL |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
GRIP DIAMETER | 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM |
SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MAXIMUM FIRST HOLE |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
GRIP LENGTH | 0.938 INCHES NOMINAL |
THREAD QUANTITY PER INCH | 28 |
MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.250 INCHES NOMINAL FIRST HOLE |
SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
MATERIAL | STEEL CORROSION RESISTING OVERALL |
SURFACE TREATMENT | PASSIVATE OVERALL |
THREAD SERIES DESIGNATOR | UNF |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.468 INCHES MINIMUM |
FASTENER LENGTH | 1.406 INCHES NOMINAL |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
GRIP DIAMETER | 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM |
SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MAXIMUM FIRST HOLE |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
GRIP LENGTH | 0.938 INCHES NOMINAL |
THREAD QUANTITY PER INCH | 28 |
MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.250 INCHES NOMINAL FIRST HOLE |
SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
MATERIAL | STEEL CORROSION RESISTING OVERALL |
SURFACE TREATMENT | PASSIVATE OVERALL |
THREAD SERIES DESIGNATOR | UNF |