| COUNTERSINK ANGLE | 20.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.614 INCHES NOMINAL |
| HEAD DIAMETER | 0.228 INCHES MINIMUM AND 0.232 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 630 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.327 INCHES MINIMUM AND 0.389 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM |