THREAD SERIES DESIGNATOR | UNJF |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
THREAD QUANTITY PER INCH | 28 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.370 INCHES NOMINAL |
FASTENER LENGTH | 1.230 INCHES MINIMUM AND |
| 1.260 INCHES MAXIMUM |
MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| IRON ALLOY 660 FASTENER |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
SURFACE TREATMENT | PASSIVATE FASTENER |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
HEAD STYLE | DISHED HEXAGON |
HEAD HEIGHT | 0.125 INCHES MINIMUM AND |
| 0.140 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.429 INCHES MINIMUM AND |
| 0.439 INCHES MAXIMUM |
LOCKING FEATURE | PATCH OR |
| PELLET OR |
| STRIP THREADS |
GRIP LENGTH | 0.865 INCHES MINIMUM AND |
| 0.885 INCHES MAXIMUM |
GRIP DIAMETER | 0.2490 INCHES MINIMUM AND |
| 0.2495 INCHES MAXIMUM |
SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 32.0 MICROINCHES GRIP |
| 32.0 MICROINCHES THREADS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.075 INCHES NOMINAL FIRST HOLE |
SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND |
| 0.086 INCHES MAXIMUM FIRST HOLE |
SPECIFICATION/STANDARD DATA | 80205-NAS6304 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |