DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.188 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 3.188 INCHES MINIMUM AND 3.562 INCHES MAXIMUM |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
FASTENER LENGTH | 4.250 INCHES NOMINAL |
FIRST DIAMETER FROM HEAD | 0.432 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.328 INCHES NOMINAL |
HEAD STYLE | HEXAGON |
MATERIAL | STEEL COMP 1340 OR STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8640 OVERALL |
NOMINAL THREAD DIAMETER | 0.437 INCHES |
SECOND DIAMETER FROM HEAD | 0.386 INCHES MINIMUM AND 0.394 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.675 INCHES MINIMUM AND 0.687 INCHES MAXIMUM |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 1.000 INCHES MINIMUM AND 1.375 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 14 |
THREAD SERIES DESIGNATOR | UNC |