| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.531 INCHES MINIMUM AND |
| 0.551 INCHES MAXIMUM |
| FASTENER LENGTH | 1.416 INCHES MINIMUM AND |
| 1.446 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 4340 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6382 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES OR |
| AMS6415 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES OVERALL |
| MINIMUM TENSILE STRENGTH | 11100 POUNDS PER SQUARE INCH |
| HEAD STYLE | SPLINE EXTENDED WASHER |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.575 INCHES MINIMUM AND |
| 0.585 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.035 INCHES MINIMUM AND |
| 0.055 INCHES MAXIMUM |
| HEAD MINOR DIAMETER | 0.360 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
| CHAMFER ANGLE | 30.0 DEGREES NOMINAL AND |
| 45.0 DEGREES NOMINAL |
| GRIP LENGTH | 0.865 INCHES MINIMUM AND |
| 0.885 INCHES MAXIMUM |
| GRIP DIAMETER | 0.3110 INCHES MINIMUM AND |
| 0.3120 INCHES MAXIMUM |
| SPECIAL FEATURES | ALLOY STEEL- 4140 (UNS G41400) PER AMS6382, 4340 (UNS G43406) PER AMS6415 OR AMS6484, 8740 (UNS G87400) PER AMS6322, AMS6325 OR AMS6327, OR 6150 (UNS G61500) PER AMS6448. DOUBLE SHEAR STENGTH LBF MIN: 16600. |
| SPECIFICATION/STANDARD DATA | 80205-NASM21134 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TENSION, STEEL, 180 KSI FTU, 450 F EXTERNAL WRENCHING, SPLINE DRIVE, FLANGED |