| FASTENER LENGTH | 1.690 INCHES MINIMUM AND 1.810 INCHES MAXIMUM |
| HEAD DIAMETER | 1.219 INCHES MINIMUM AND 1.344 INCHES MAXIMUM |
| HEAD HEIGHT | 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM |
| HEAD STYLE | ROUND |
| MATERIAL | |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| NECK LENGTH | 0.314 INCHES MINIMUM AND 0.344 INCHES MAXIMUM |
| NECK WIDTH | 0.616 INCHES MINIMUM AND 0.642 INCHES MAXIMUM |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 11 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |