THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.312 INCHES |
THREAD QUANTITY PER INCH | 24 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.300 INCHES MINIMUM AND |
| 0.330 INCHES MAXIMUM |
FASTENER LENGTH | 1.880 INCHES NOMINAL |
MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 8740 OVERALL |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | FLAT CHAMFER |
HEAD DIAMETER | 0.490 INCHES MINIMUM AND |
| 0.519 INCHES MAXIMUM |
HEAD HEIGHT | 0.120 INCHES NOMINAL |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.760 INCHES NOMINAL FIRST HOLE |
SHANK UNTHREADED HOLE DIAMETER | 0.073 INCHES NOMINAL FIRST HOLE |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 5 |
FIRST DIAMETER FROM HEAD | 0.344 INCHES MINIMUM AND |
| 0.345 INCHES MAXIMUM |
SECOND DIAMETER FROM HEAD | 0.341 INCHES MINIMUM AND |
| 0.342 INCHES MAXIMUM |
THIRD DIAMETER FROM HEAD | 0.240 INCHES NOMINAL |
FOURTH DIAMETER FROM HEAD | 0.305 INCHES MINIMUM AND |
| 0.312 INCHES MAXIMUM |
FIFTH DIAMETER FROM HEAD | 0.240 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.265 INCHES MINIMUM AND |
| 0.305 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.275 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.855 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 1.850 INCHES NOMINAL |
THE MANUFACTURERS DATA | |
MANUFACTURERS CODE | 0AHP5 |
DESIGN CONTROL REFERENCE | 138912 |