THREAD SERIES DESIGNATOR | UNJF |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
THREAD QUANTITY PER INCH | 20 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.716 INCHES MINIMUM AND |
| 0.766 INCHES MAXIMUM |
FASTENER LENGTH | 4.351 INCHES MINIMUM AND |
| 4.381 INCHES MAXIMUM |
MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP E4340 OR |
| STEEL COMP 6150 OR |
| STEEL COMP 8735 OR |
| STEEL COMP 8740 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR |
| MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR |
| MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR |
| MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND |
| 43.0 ROCKWELL C MAXIMUM OVERALL |
MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
HEAD STYLE | DOUBLE HEXAGON W/HOLE |
HEAD HEIGHT | 0.494 INCHES MINIMUM AND |
| 0.514 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.556 INCHES MINIMUM AND |
| 0.565 INCHES MAXIMUM |
EXTENDED WASHER DIAMETER | 0.818 INCHES MINIMUM AND |
| 0.828 INCHES MAXIMUM |
EXTENDED WASHER THICKNESS | 0.113 INCHES MINIMUM AND |
| 0.133 INCHES MAXIMUM |
GRIP LENGTH | 3.615 INCHES MINIMUM AND |
| 3.635 INCHES MAXIMUM |
GRIP DIAMETER | 0.4985 INCHES MINIMUM AND |
| 0.4995 INCHES MAXIMUM |
SPECIFICATION/STANDARD DATA | 80205-NAS628 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |