| FASTENER LENGTH | 1.500 INCHES NOMINAL |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| HOLE CONFIGURATION STYLE | ROUND INTERNAL HEXAGON |
| HOLE DIAMETER | 0.047 INCHES NOMINAL |
| HOLE TYPE | DRILLED |
| HOLE QUANTITY | 6 |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SPECIAL FEATURES | COLOR BLACK |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNRF |
| WIDTH ACROSS FLATS | 0.187 INCHES NOMINAL |