| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.5000 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.735 INCHES NOMINAL |
| FASTENER LENGTH | 1.782 INCHES MINIMUM AND |
| 1.827 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES OR |
| AMS5732 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | ALUMINUM AND |
| PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS4006 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES AND |
| AMS2700 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES OVERALL |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND |
| 43.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 30900 POUNDS PER SQUARE INCH |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.250 INCHES MINIMUM AND |
| 0.265 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND |
| 0.752 INCHES MAXIMUM |
| CHAMFER ANGLE | 15.0 DEGREES NOMINAL |
| GRIP LENGTH | 0.802 INCHES MINIMUM AND |
| 0.822 INCHES MAXIMUM |
| GRIP DIAMETER | 0.4985 INCHES MINIMUM AND |
| 0.4995 INCHES MAXIMUM |
| SPECIAL FEATURES | A286 (UNS S66286) PER AMS5731, AMS5732, AMS5737 OR AMS5853. HEAT TREATMENT: CRES - 180 KSI MIN ULTIMATE TENSILE; 108 KSI MIN ULTIMATE SHEAR AT ROOM TEMPERATURE. PRECIPITATION HARDEN PER AMS5853. HARDNESS: ALLOY STEEL - 39 - 43 HRC. CRES - CLEAN AND PASSIVATE PER AMS2700, METHOD 1, CLASS 4. OPTIONAL ALUMINUM COAT PER NAS4006, DESIGNATED BY CODE "P". DOUBLE SHEAR STRENGTH LBF MIN: 42400. |
| SPECIFICATION/STANDARD DATA | 80205-NAS1953 THRU NAS1970 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, SHEAR, HEXAGON HEAD, 108 KSI SHEAR, LONG THREAD |