| OVERALL LENGTH | 0.9960 INCHES MINIMUM AND 1.0597 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OR AMS5737 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE |
| MATERIAL | IRON ALLOY 660 |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.1875 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.415 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
| SHOULDER LENGTH | 0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM |
| SPECIAL FEATURES | CETYL ALCOHOL LUBE PER HI SHEAR SPEC 305 |
| STYLE DESIGNATOR | SHOULDERED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | HI SHEAR SPEC 258 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A STUD THREAD |
| THREAD LENGTH | 0.4375 INCHES NOMINAL STUD THREAD |
| THREAD QUANTITY PER INCH | 28 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) STUD THREAD |