| CHAMFER ANGLE | 20.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.418 INCHES MINIMUM AND 0.422 INCHES MAXIMUM |
| HEAD DIAMETER | 0.256 INCHES MINIMUM AND 0.258 INCHES MAXIMUM |
| HEAD HEIGHT | 0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5643 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.1380 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM-A967 ASSN STD ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |