| DISTANCE ACROSS FLATS | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP E4340 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.2385 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.320 INCHES MINIMUM AND 0.330 INCHES MAXIMUM |
| OVERALL LENGTH | 1.405 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.700 INCHES NOMINAL |
| SHOULDER LENGTH | 0.115 INCHES NOMINAL |
| SPECIAL FEATURES | HOLE 0.0938 IN. DIA THROUGH THREADS ON NUT END |
| STUD END SHANK DIAMETER | 0.3678 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.100 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDERED AND STEPPED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS13101 TYPE 2 CLASS 2,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.390 INCHES MINIMUM STUD THREAD |
| THREAD LENGTH | 0.450 INCHES MINIMUM NUT THREAD AND 0.520 INCHES MAXIMUM NUT THREAD |
| THREAD QUANTITY PER INCH | 24 STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJF STUD THREAD |