| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.316 INCHES NOMINAL |
| FASTENER LENGTH | 4.051 INCHES MINIMUM AND |
| 4.081 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 | 160000 POUNDS PER SQUARE INCH |
| SINGLE SHEAR STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | FILLISTER COUNTERSUNK |
| HEAD DIAMETER | 0.497 INCHES MINIMUM AND |
| 0.507 INCHES MAXIMUM |
| BOTTOM COUNTERSINK DIAMETER | 0.4241 INCHES MINIMUM AND |
| 0.4245 INCHES MAXIMUM |
| HEAD INSIDE DIAMETER | 0.4490 INCHES MINIMUM |
| HEAD HEIGHT | 0.1450 INCHES MINIMUM AND |
| 0.1550 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.497 INCHES MINIMUM AND |
| 0.507 INCHES MAXIMUM |
| HEAD MINOR DIAMETER | 0.4490 INCHES MINIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |
| 101.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | CRUCIFORM RIBBED |
| GRIP LENGTH | 3.7400 INCHES MINIMUM AND |
| 3.7600 INCHES MAXIMUM |
| GRIP DIAMETER | 0.2485 INCHES MINIMUM AND |
| 0.2495 INCHES MAXIMUM |
| POINT LENGTH | 0.018 INCHES NOMINAL |
| SPECIAL FEATURES | TITLE: BOLT, 100 DEG CLOSE TOLERANCE HEAD AND SHANK, 160,000 PSI, SHORT THREAD. ALLOY STEEL - 4140 (UNS G41400) OR 4340 (UNS G43406) OR 8740 (UNS G87400). MATERIAL CLASSIFICATION: AMS6382 OR AMS6415 OR AMS6484 OR AMS6322 OR AMS6325 OR AMS6327. |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, 100 DEG CLOSE TOLERANCE HEAD AND SHANK |
| HAZARDOUS SUBSTANCES | CADMIUM |