FASTENER LENGTH | 3.234 INCHES MINIMUM AND 3.266 INCHES MAXIMUM |
HARDNESS RATING | 23.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-637 FED SPEC ALL MATERIAL RESPONSES OVERALL |
MATERIAL | STEEL COMP 1137 OR STEEL COMP 1141 OVERALL |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
POINT CHAMFER ANGLE | 90.0 DEGREES NOMINAL |
POINT DIAMETER | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
POINT LENGTH | 1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM |
POINT STYLE | CHAMFER DOG |
WIDTH BETWEEN FLATS | 0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 2.031 INCHES MINIMUM |
THREAD SERIES DESIGNATOR | UNF |
THREAD QUANTITY PER INCH | 20 |