| COUNTERBORE DIAMETER | 0.096 INCHES MINIMUM AND 0.100 INCHES MAXIMUM NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | COPPER ALLOY 230 OR COPPER ALLOY 240 OR COPPER ALLOY 260 OR COPPER ALLOY 262 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OR COPPER ALLOY 272 OR COPPER ALLOY 274 OR COPPER ALLOY 280 OR COPPER ALLOY 330 OR COPPER ALLOY 331 OR COPPER ALLOY 332 OR COPPER ALLOY 335 OR COPPER ALLOY 340 OR COPPER ALLOY 342 OR COPPER ALLOY 344 OR COPPER ALLOY 345 OR COPPER ALLOY 347 OR COPPER ALLOY 348 OR COPPER ALLOY 350 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| PILOT LENGTH | 0.105 INCHES NOMINAL |
| PILOT DIAMETER | 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.086 INCHES |
| NUT COUNTERBORE DEPTH | 0.105 INCHES NOMINAL NUT |
| NUT HEIGHT | 0.256 INCHES NOMINAL |
| NUT STYLE | CLINCH |
| WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-N-290,TY 6(KC),CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | NICKEL OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 56 |
| THREAD SERIES | UNC |