| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.205 INCHES MINIMUM AND 0.235 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 3.187 INCHES NOMINAL |
| FASTENER LENGTH | 3.860 INCHES MINIMUM AND 3.890 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM |
| HEAD HEIGHT | 7.82 MILLIMETERS MINIMUM AND 8.18 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS 970 EN19 CONDITION V (USE STG577) NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL |
| NOMINAL THREAD DIAMETER | 12.00 MILLIMETERS |
| SECOND DIAMETER FROM HEAD | 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 18.67 MILLIMETERS MINIMUM AND 19.00 MILLIMETERS MAXIMUM |
| THREAD CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.673 INCHES MINIMUM AND 0.703 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | ISO M |
| THREAD PITCH IN MILLIMETERS | 1.75 |