| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 303 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| PILOT DIAMETER | 0.220 INCHES MINIMUM AND |
| 0.224 INCHES MAXIMUM |
| PILOT LENGTH | 0.189 INCHES MINIMUM AND |
| 0.201 INCHES MAXIMUM |
| NUT DIAMETER | 0.302 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM |
| NUT HEIGHT | 0.383 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-N-45938/8-31C |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M45938/8-31C |