| FASTENER LENGTH | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM |
| HEAD DIAMETER | 0.215 INCHES MINIMUM AND 0.275 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 140000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| THREAD SERIES DESIGNATOR | SQUARE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD LENGTH | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM |