| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.694 INCHES NOMINAL |
| FASTENER LENGTH | 1.491 INCHES MINIMUM AND |
| 1.521 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR |
| AMS6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416A TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.184 INCHES MINIMUM AND |
| 0.214 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.678 INCHES MINIMUM AND |
| 0.690 INCHES MAXIMUM |
| GRIP LENGTH | 0.802 INCHES MINIMUM AND |
| 0.812 INCHES MAXIMUM |
| GRIP DIAMETER | 0.437 INCHES MINIMUM AND |
| 0.460 INCHES MAXIMUM |
| SURFACE FINISH | 32.0 MICROINCHES GRIP |
| 32.0 MICROINCHES THREADS |
| 32.0 MICROINCHES FASTENER |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.305 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.201 INCHES NOMINAL FIRST HOLE |
| SPECIFICATION/STANDARD DATA | 80205-NAS6607 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |