| COUNTERBORE DIAMETER | 0.317 INCHES MINIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5731 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5732 ASSN STD 3RD MATERIAL RESPONSE OR AMS 5737 ASSN STD 4TH MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE SHELL |
| MATERIAL | IRON ALLOY 660 NUT |
| MATERIAL | IRON ALLOY 660 SHELL |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT COUNTERBORE DEPTH | 0.062 INCHES MINIMUM NUT |
| NUT HEIGHT | 0.313 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| NUT LENGTH | 1.381 INCHES MINIMUM AND 1.396 INCHES MAXIMUM |
| NUT STYLE | PLATE (FLOATING) |
| PLATE THICKNESS | 0.036 INCHES MAXIMUM |
| PLATE WIDTH | 0.626 INCHES MINIMUM AND 0.641 INCHES MAXIMUM |
| SPECIAL FEATURES | NUT, PLATE (FLOATING)-RIVET MOUNTED, AXIAL STRENGTH LBS MIN 8.380 |
| SURFACE TREATMENT | PASSIVATE NUT |
| SURFACE TREATMENT | PASSIVATE SHELL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |