| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 7.250 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.250 INCHES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
| FASTENER LENGTH | 7.969 INCHES MINIMUM AND 8.000 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| HEAD HEIGHT | 0.219 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SECOND DIAMETER FROM HEAD | 0.271 INCHES MINIMUM AND 0.275 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.688 INCHES MINIMUM AND 0.812 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH BETWEEN FLATS | 0.427 INCHES MINIMUM AND 0.442 INCHES MAXIMUM |