| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.438 INCHES NOMINAL |
| FASTENER LENGTH | 0.548 INCHES MINIMUM AND |
| 0.578 INCHES MAXIMUM |
| MATERIAL | PLASTIC LOCKING FEATURE |
| STEEL COMP 4140 OR |
| STEEL COMP 4340 OR |
| STEEL COMP 8740 FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-DTL-18240 AND QPL-18240 GOVERNMENT STD/SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| AMS6349 OR 6382 NATIONAL STD 1ST MATERIAL RESPONSE OR |
| AMS6415 OR 6484 NATIONAL STD 2ND MATERIAL RESPONSE OR |
| AMS6322 NATIONAL STD 3RD MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | CADMIUM FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416,TYPE II,CLASS 2 NATIONAL STD SINGLE TREATMENT RESPONSE FASTENER |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.156 INCHES MINIMUM AND |
| 0.171 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND |
| 0.502 INCHES MAXIMUM |
| LOCKING FEATURE | PATCH THREADS |
| GRIP LENGTH | 0.115 INCHES MINIMUM AND |
| 0.135 INCHES MAXIMUM |
| GRIP DIAMETER | 0.3110 INCHES MINIMUM AND |
| 0.3120 INCHES MAXIMUM |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 32.0 MICROINCHES THREADS |
| SPECIFICATION/STANDARD DATA | 80205-NAS6203 THRU 6220 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |