| FASTENER LENGTH | 0.172 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM OVERALL |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | FOUR SPLINE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 8630H OR STEEL COMP 8740 OVERALL |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| POINT LENGTH | 0.050 INCHES NOMINAL |
| POINT STYLE | DOG |
| POINT DIAMETER | 0.044 INCHES MINIMUM AND 0.049 INCHES MAXIMUM |
| SPLINE MAJOR DIAMETER | 0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| SPLINE MINOR DIAMETER | 0.037 INCHES MINIMUM AND 0.038 INCHES MAXIMUM |
| SPLINE WIDTH | 0.016 INCHES MINIMUM AND 0.017 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 56 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.016 INCHES MINIMUM AND 0.017 INCHES MAXIMUM |