| DISTANCE FROM CENTERLINE TO FLAT | 0.151 INCHES MINIMUM AND 0.155 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.672 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 3.692 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.722 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 2.718 INCHES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 |
| FASTENER LENGTH | 4.404 INCHES NOMINAL |
| FIRST DIAMETER FROM HEAD | 0.250 INCHES MINIMUM AND 0.254 INCHES MAXIMUM |
| FOURTH DIAMETER FROM HEAD | 0.294 INCHES NOMINAL |
| HEAD DIAMETER | 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
| HEAD HEIGHT | 0.351 INCHES MINIMUM AND 0.361 INCHES MAXIMUM |
| HEAD STYLE | DEE CHAMFER |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SECOND DIAMETER FROM HEAD | 0.294 INCHES NOMINAL |
| THIRD DIAMETER FROM HEAD | 0.250 INCHES MINIMUM AND 0.254 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |