| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.500 INCHES NOMINAL |
| HEAD HEIGHT | 0.080 INCHES NOMINAL |
| HEAD DIAMETER | 0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | TORX |
| LOCKING FEATURE | PATCH |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE |
| SCREW MATERIAL | IRON ALLOY 660 |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE |
| SPECIFICATION/STANDARD DATA | 80205-NAS5312 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SPLINE MAJOR DIAMETER | 0.155 INCHES NOMINAL |
| SPLINE MINOR DIAMETER | 0.115 INCHES NOMINAL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.420 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |