| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| HEAD DIAMETER | 0.397 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| HEAD STYLE | FLAT TOP ELEVATOR |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL | STEEL COMP 1011 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 FASTENER |
| NOMINAL THREAD DIAMETER | 0.216 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.429 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | COUNTERSINK EXTERNAL TEETH |
| WASHER QUANTITY | 1 |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.725 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 24 |