| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 4130 OVERALL |
| PLASTIC POLYHEXAMETHYLENE AMIDE OR |
| PLASTIC POLYCAPROLACTAM CAP |
| PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES CAP |
| MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES LOCKING INSERT |
| SURFACE TREATMENT | CADMIUM NUT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.190 INCHES MINIMUM AND |
| 0.194 INCHES MAXIMUM |
| PILOT LENGTH | 0.037 INCHES MINIMUM AND |
| 0.043 INCHES MAXIMUM |
| NUT DIAMETER | 0.276 INCHES MINIMUM AND |
| 0.286 INCHES MAXIMUM |
| NUT HEIGHT | 0.288 INCHES MINIMUM AND |
| 0.294 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT COUNTERBORE DEPTH | 0.040 INCHES NOMINAL NUT |
| COUNTERBORE DIAMETER | 0.152 INCHES MINIMUM AND |
| 0.157 INCHES MAXIMUM NUT |
| TEMP RATING | 350.0 DEG FAHRENHEIT NOMINAL |