| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.3750 INCHES NOMINAL |
| FASTENER LENGTH | 0.8750 INCHES NOMINAL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5737 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35, TYPE II OR VIII FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 0.5770 INCHES NOMINAL |
| COUNTERSINK ANGLE | 99.0000 DEGREES MINIMUM AND |
| 101.0000 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| GRIP LENGTH | 0.4900 INCHES MINIMUM AND |
| 0.5100 INCHES MAXIMUM |
| GRIP DIAMETER | 0.3110 INCHES MINIMUM AND |
| 0.3120 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, MACHINE-FLAT 100 DEG HEAD, CLOSE TOLERANCE, SHORT THREAD, OFFSET CRUCIFORM, 160 KSI |