| FASTENER LENGTH | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.221 INCHES MINIMUM AND 0.226 INCHES MAXIMUM |
| HEAD HEIGHT | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| HOLE CONFIGURATION STYLE | ROUND INTERNAL HEXAGON |
| HOLE DIAMETER | 0.035 INCHES NOMINAL |
| HOLE QUANTITY | 4 |
| HOLE TYPE | DRILLED |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| WIDTH ACROSS FLATS | 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |