| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | PLATE |
| MATERIAL | IRON ALLOY 660 NUT |
| IRON ALLOY 660 SHELL |
| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5525 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5735 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| AMS5525 ASSN STD SINGLE MATERIAL RESPONSE SHELL |
| SURFACE TREATMENT | PASSIVATE SHELL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| NUT LENGTH | 1.306 INCHES MAXIMUM |
| NUT HEIGHT | 0.281 INCHES MAXIMUM |
| PLATE THICKNESS | 0.020 INCHES MINIMUM AND |
| 0.030 INCHES MAXIMUM |
| PLATE WIDTH | 0.531 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.312 INCHES MINIMUM FIRST END |
| MOUNTING HOLE ARRANGEMENT STYLE | 2 HOLES |
| MOUNTING HOLE DIAMETER | 0.098 INCHES MINIMUM AND |
| 0.103 INCHES MAXIMUM |
| DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | 0.495 INCHES MINIMUM AND |
| 0.505 INCHES MAXIMUM |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH | 0.310 INCHES MINIMUM AND |
| 0.314 INCHES MAXIMUM |
| TEMP RATING | 785.0 DEG FAHRENHEIT MINIMUM AND |
| 815.0 DEG FAHRENHEIT MAXIMUM |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 77445 |
| MFR SOURCE CONTROLLING REFERENCE | ST1571-05 |