| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.407 INCHES MINIMUM AND 0.469 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 3.906 INCHES MINIMUM AND 4.062 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
| FASTENER LENGTH | 5.031 INCHES MINIMUM AND 5.062 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| HEAD HEIGHT | 0.318 INCHES MINIMUM AND 0.330 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL | STEEL COMP 1020 OVERALL |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| SECOND DIAMETER FROM HEAD | 0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.000 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 14 |
| WIDTH BETWEEN FLATS | 0.646 INCHES MINIMUM AND 0.666 INCHES MAXIMUM |