| THREAD SERIES | UNJS |
| NOMINAL THREAD SIZE | 2.875 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2700 ASSN STD SINGLE TREATMENT RESPONSE OR |
| AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| NUT STYLE | KNURLED |
| NUT DIAMETER | 4.290 INCHES MINIMUM AND |
| 4.310 INCHES MAXIMUM |
| NUT THICKNESS | 0.555 INCHES MINIMUM AND |
| 0.575 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 4.120 INCHES MINIMUM AND |
| 4.140 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE WITH METALLIC INSERT |
| LUBRICATION | DRY FILM LUBRICANT |
| SPECIAL FEATURES | ASSEBLY INCLUDES LOCKNUT AND RETAINER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LOCKNUT AND RETAINER ASSEMBLY |