THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
THREAD QUANTITY PER INCH | 28 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.460 INCHES MAXIMUM |
FASTENER LENGTH | 1.910 INCHES NOMINAL |
MATERIAL | STEEL OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.100 INCHES NOMINAL |
WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND |
| 0.440 INCHES MAXIMUM |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 5 |
FIRST DIAMETER FROM HEAD | 0.255 INCHES MINIMUM AND |
| 0.257 INCHES MAXIMUM |
SECOND DIAMETER FROM HEAD | 0.182 INCHES MINIMUM AND |
| 0.188 INCHES MAXIMUM |
THIRD DIAMETER FROM HEAD | 0.255 INCHES MINIMUM AND |
| 0.257 INCHES MAXIMUM |
FOURTH DIAMETER FROM HEAD | 0.182 INCHES MINIMUM AND |
| 0.188 INCHES MAXIMUM |
FIFTH DIAMETER FROM HEAD | 0.255 INCHES MINIMUM AND |
| 0.257 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.140 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.640 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.840 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 1.280 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER | 1.360 INCHES NOMINAL |
THE MANUFACTURERS DATA | |
MANUFACTURERS CODE | 03104 |
DESIGN CONTROL REFERENCE | 706420 |