THREAD SERIES DESIGNATOR | UNJF |
NOMINAL THREAD DIAMETER | 0.190 INCHES |
THREAD QUANTITY PER INCH | 32 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.323 INCHES NOMINAL |
FASTENER LENGTH | 2.933 INCHES MINIMUM AND |
| 2.963 INCHES MAXIMUM |
MATERIAL | STEEL COMP 4340 OR |
| STEEL COMP 8740 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY2, CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND |
| 40.0 ROCKWELL C MAXIMUM OVERALL |
MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.110 INCHES MINIMUM AND |
| 0.125 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND |
| 0.376 INCHES MAXIMUM |
GRIP LENGTH | 2.615 INCHES MINIMUM AND |
| 2.635 INCHES MAXIMUM |
GRIP DIAMETER | 0.1885 INCHES MINIMUM AND |
| 0.1895 INCHES MAXIMUM |
SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 125.0 MICROINCHES SIDES OF HEAD |
| 32.0 MICROINCHES GRIP |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.899 INCHES MINIMUM AND |
| 2.919 INCHES MAXIMUM FIRST HOLE |
SHANK UNTHREADED HOLE DIAMETER | 0.073 INCHES MINIMUM AND |
| 0.088 INCHES MAXIMUM FIRST HOLE |
FEATURES PROVIDED | FINISHED HEAD |
SPECIFICATION/STANDARD DATA | 80205-NAS6303 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |