| DISTANCE ACROSS FLATS | 0.250 INCHES NOMINAL |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 5.630 INCHES MINIMUM AND 5.670 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6327 ASSN STD SINGLE MATERIAL RESPONSE |
| NOMINAL THREAD SIZE | 0.312 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| SHANK DIAMETER | 0.307 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| SHANK LENGTH EXCLUDING WRENCHING PORTION | 2.640 INCHES MINIMUM AND 2.780 INCHES MAXIMUM |
| SPECIAL FEATURES | STUD END THREAD 0.007 IN. OVERSIZE |
| STYLE DESIGNATOR | STEPPED |
| THREAD CLASS | 3A NUT THREAD |
| THREAD LENGTH | 0.700 INCHES MINIMUM NUT THREAD |
| THREAD LENGTH | 0.730 INCHES MINIMUM STUD THREAD |
| THREAD PITCH DIAMETERS | +0.3470 TO 0.3480 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNC STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |