| FASTENER LENGTH | 0.188 INCHES NOMINAL |
| HARDNESS RATING | 60.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL B MAXIMUM FASTENER |
| HEAD DIAMETER | 0.187 INCHES MINIMUM AND 0.205 INCHES MAXIMUM |
| HEAD HEIGHT | 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626 FED SPEC ALL MATERIAL RESPONSES FASTENER |
| MATERIAL | COPPER ALLOY 230 OR COPPER ALLOY 240 OR COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OR COPPER ALLOY 360 OR COPPER ALLOY 377 FASTENER |
| MATERIAL | COPPER ALLOY PRIMARY WASHER |
| NOMINAL THREAD DIAMETER | 0.125 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.034 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.258 INCHES MINIMUM AND 0.268 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT INTERNAL TEETH |
| WASHER QUANTITY | 1 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.154 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 40 |
| THREAD SERIES DESIGNATOR | UNC |