| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.425 INCHES NOMINAL |
| FASTENER LENGTH | 1.847 INCHES MINIMUM AND |
| 1.877 INCHES MAXIMUM |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE HEAD |
| PASSIVATE BEARING SURFACE OF HEAD |
| CHROMIUM GRIP |
| PASSIVATE THREADS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BEARING SURFACE OF HEAD |
| QQ-C-320 CL2 FED SPEC 1ST TREATMENT RESPONSE GRIP |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE THREADS |
| MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.156 INCHES MINIMUM AND |
| 0.171 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND |
| 0.502 INCHES MAXIMUM |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 0.311 INCHES MINIMUM AND |
| 0.312 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 1.427 INCHES MINIMUM AND |
| 1.447 INCHES MAXIMUM FIRST SHOULDER |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-B-87114 |