| COUNTERBORE DIAMETER | 0.152 INCHES MINIMUM AND 0.157 INCHES MAXIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66,AISI/SAE 4130 FED STD 2ND MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC 1ST MATERIAL RESPONSE LOCKING INSERT |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| MATERIAL | STEEL COMP 4130 NUT |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT COUNTERBORE DEPTH | 0.040 INCHES NOMINAL NUT |
| NUT DIAMETER | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM |
| NUT HEIGHT | 0.157 INCHES MINIMUM AND 0.183 INCHES MAXIMUM |
| 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 |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | CADMIUM OVERALL EXCEPT INSERT |
| TEMP RATING | 350.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 32 |