| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.173 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 3.423 INCHES MINIMUM AND 3.453 INCHES MAXIMUM |
| FASTENER LENGTH | 4.547 INCHES MINIMUM AND 4.577 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.790 INCHES MINIMUM AND 0.795 INCHES MAXIMUM |
| HEAD HEIGHT | 12.78 MILLIMETERS MINIMUM AND 13.21 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL | STEEL OVERALL |
| SECOND DIAMETER FROM HEAD | 0.651 INCHES MINIMUM AND 0.656 INCHES MAXIMUM |
| SPECIAL FEATURES | THREAD SIZE, 20.00X2.50:NOT CASEHARDENED |
| WIDTH BETWEEN FLATS | 29.67 MILLIMETERS MINIMUM AND 30.00 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THREAD CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.125 INCHES NOMINAL |
| THREAD SERIES | ISO M |