| DISTANCE ACROSS FLATS | 0.308 INCHES NOMINAL |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5773 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5763 ASSN STD SINGLE MATERIAL RESPONSE |
| OVERALL LENGTH | 1.550 INCHES MINIMUM AND 1.580 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NUT END SHANK DIAMETER | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | STUD,HEX-CYLINDER |
| SHOULDER LENGTH | 0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
| STUD END SHANK DIAMETER | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDERED AND STEPPED |
| SPECIAL FEATURES | STUD END THREADS ARE 0.3125-24 UNJF, CLASS 3A |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM NUT THREAD |
| THREAD LENGTH | 0.910 INCHES NOMINAL STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |