| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM |
| FASTENER LENGTH | 0.798 INCHES NOMINAL |
| GRIP DIAMETER | 0.3266 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM |
| GRIP LENGTH | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM |
| HEAD DIAMETER | 0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE III |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 16000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.438 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 24 |