| COUNTERBORE DIAMETER | 0.178 INCHES MINIMUM AND 0.183 INCHES MAXIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| NUT DIAMETER | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.040 INCHES NOMINAL NUT |
| NUT HEIGHT | 0.157 INCHES MINIMUM AND 0.173 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.221 INCHES MINIMUM AND 0.225 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 |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNJC |
| THREAD QUANTITY PER INCH | 32 |