| DISTANCE ACROSS FLATS | 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM | 
| MATERIAL | TITANIUM ALLOY UNS R56400 | 
| PROPRIETARY CHARACTERISTICS | PACS | 
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD0.250 INCHES STUD THREAD | 
| NUT END SHANK DIAMETER | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM | 
| OVERALL LENGTH | 2.583 INCHES NOMINAL | 
| SHOULDER LENGTH | 0.095 INCHES NOMINAL | 
| STYLE DESIGNATOR | SHOULDERED | 
| SURFACE FINISH | 63.0 MICROINCHES SHANK | 
| THREAD CLASS | 3A NUT THREAD3A STUD THREAD | 
| THREAD DIRECTION | RIGHT-HAND NUT THREADRIGHT-HAND STUD THREAD | 
| THREAD LENGTH | 0.461 INCHES NOMINAL NUT THREAD0.461 INCHES NOMINAL STUD THREAD | 
| THREAD QUANTITY PER INCH | 28 NUT THREAD28 STUD THREAD | 
| THREAD SERIES DESIGNATOR | UNJF NUT THREADUNJF STUD THREAD |