| FASTENER LENGTH | 0.188 INCHES NOMINAL |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM |
| HEAD HEIGHT | 0.026 INCHES MINIMUM AND 0.032 INCHES MAXIMUM |
| HEAD STYLE | BUTTON |
| INTERNAL DRIVE STYLE | SIX SPLINE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4037 OVERALL |
| NOMINAL THREAD DIAMETER | 0.060 INCHES |
| SPLINE MINOR DIAMETER | 0.035 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| SPLINE WIDTH | 0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM |
| SPLINE MAJOR DIAMETER | 0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| THREAD LENGTH | 0.188 INCHES MINIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 80 |