| THREAD SERIES DESIGNATOR | M |
| NOMINAL THREAD DIAMETER | 12.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 1.5 |
| EXTERNAL THREAD TOLERANCE CLASS | 4H |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 23.75 MILLIMETERS MINIMUM AND |
| 24.25 MILLIMETERS MAXIMUM |
| FASTENER LENGTH | 43.75 MILLIMETERS MINIMUM AND |
| 44.25 MILLIMETERS MAXIMUM |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 1100 MEGAPASCALS |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 7.82 MILLIMETERS MINIMUM AND |
| 8.18 MILLIMETERS MAXIMUM |
| WIDTH BETWEEN FLATS | 18.67 MILLIMETERS MINIMUM AND |
| 19.00 MILLIMETERS MAXIMUM |
| GRIP LENGTH | 19.75 MILLIMETERS MINIMUM AND |
| 20.25 MILLIMETERS MAXIMUM |
| GRIP DIAMETER | 11.982 MILLIMETERS MINIMUM AND |
| 12.000 MILLIMETERS MAXIMUM |
| SURFACE FINISH | 3.2 MICROMETERS BEARING SURFACE OF HEAD |
| 3.2 MICROMETERS GRIP |
| 3.2 MICROMETERS THREADS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |