| FASTENER LENGTH | 1.000 INCHES NOMINAL |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 0.340 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | SLOT |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| MINIMUM TENSILE STRENGTH | 60000 POUNDS PER SQUARE INCH |
| SCREW MATERIAL | STEEL |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE |
| NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 9C STYLE |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY THREAD CLASS |