| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD DIAMETER | 0.155 INCHES MINIMUM AND 0.167 INCHES MAXIMUM |
| HEAD HEIGHT | 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL | STEEL COMP 430 FASTENER |
| MATERIAL | STEEL CORROSION RESISTING PRIMARY WASHER |
| MINIMUM YIELD STRENGTH | 40000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.012 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT INTERNAL TEETH |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD LENGTH | 0.238 INCHES MINIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 56 |
| WASHER QUANTITY | 1 |