| DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END | 0.625 INCHES NOMINAL FIRST HOLE |
| COTTER PIN HOLE DIAMETER | 0.078 INCHES NOMINAL FIRST HOLE |
| DISTANCE ACROSS FLATS | 0.431 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| OVERALL LENGTH | 1.290 INCHES MINIMUM AND 1.305 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 630 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.425 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.500 INCHES NOMINAL |
| SHOULDER LENGTH | 0.075 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| SPECIAL FEATURES | WITH UNDERCUT ON SIDE OF BOTH SHOULDERS 0.210 IN. MIN; 0.220 IN. MAX DIA;0.040 IN. WIDE |
| STUD END SHANK DIAMETER | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDERED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS124,FSC-93366 MFR REF SINGLE TREATMENT RESPONSE OR PS923,FSC-93366 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE 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 | 0.300 INCHES MINIMUM NUT THREAD |
| THREAD LENGTH | 0.250 INCHES MINIMUM STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD QUANTITY PER INCH | 28 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJF STUD THREAD |