| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 2.829 INCHES MINIMUM AND 2.859 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 5.156 INCHES NOMINAL |
| FASTENER LENGTH | 6.261 INCHES MINIMUM AND 6.281 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.547 INCHES MINIMUM AND 0.552 INCHES MAXIMUM |
| HEAD HEIGHT | 7.82 MILLIMETERS MINIMUM AND 8.18 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS 970 EN19 CONDITION S (USE STG574) 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 |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THIRD DIAMETER FROM HEAD | 0.5310 INCHES MINIMUM AND 0.5315 INCHES MAXIMUM |
| THREAD CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | ISO M |
| THREAD PITCH IN MILLIMETERS | 1.75 |