| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.469 INCHES NOMINAL |
| FASTENER LENGTH | 0.954 INCHES MINIMUM AND |
| 0.984 INCHES MAXIMUM |
| MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS4928 FED SPEC SINGLE MATERIAL RESPONSE OR |
| AMS4967 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 3600 POUNDS PER SQUARE INCH |
| HEAD STYLE | COUNTERSUNK CYLINDRICAL CONVEX |
| HEAD MAJOR DIAMETER | 0.459 INCHES NOMINAL |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |
| 101.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | TORX |
| SPLINE MAJOR DIAMETER | 0.2195 INCHES MINIMUM AND |
| 0.2225 INCHES MAXIMUM |
| SURFACE FINISH | 63.0 MICROINCHES GRIP |
| 32.0 MICROINCHES TOP OF HEAD |
| 32.0 MICROINCHES THREADS |
| SPECIAL FEATURES | ONE SLOT ON SHANK 0.130 IN. MIN BY 0.170 IN. MAX WIDTH, LOCATED 0.190 FROM TOP OF HEAD; HEAD HAS INTERNAL THREAD, 0.1380-32 UNJC-3B THREAD DEPTH FROM TOP OF HEAD .300-.345 COUNTERBORE .145-.150 DIA X .130-.140 DEEP FROM TOP OF HEAD; 160 KSI MINIMUM ULTIMATE TENSILE STRENGTH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SIX LOBE RECESS BOLT, 100 DEG FLUSH SEALANT INJECTION |