| COUNTERSINK ANGLE | 20.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.530 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| HEAD DIAMETER | 0.153 INCHES MINIMUM AND 0.157 INCHES MAXIMUM |
| HEAD HEIGHT | 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.112 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 TY 1 OR 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.358 INCHES MINIMUM AND 0.393 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 40 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.0781 INCHES MINIMUM AND 0.0791 INCHES MAXIMUM |