| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT DIAMETER | 0.435 INCHES MINIMUM AND 0.465 INCHES MAXIMUM |
| NUT HEIGHT | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM |
| PILOT DIAMETER | 0.369 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| PILOT LENGTH | 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |