| COUNTERSINK ANGLE | 129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.613 INCHES NOMINAL |
| HEAD DIAMETER | 0.3206 INCHES MINIMUM AND 0.4045 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | TORX |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR MS 5732 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR MS 5737 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR MS 5853 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 2000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| SPECIFICATION/STANDARD DATA | 80205-NAS5310 NATIONAL STD/SPEC |
| SPLINE MAJOR DIAMETER | 0.155 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2700, METHOD 1, CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.363 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |