| BEARING SURFACE TYPE | FLAT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, JAM, DRILLED AND UNDRILLED, STANDARD AND THIN HEIGHT, A286 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.4375 INCHES |
| NUT HEIGHT | 0.156 INCHES NOMINAL |
| NUT STYLE | HEXAGON |
| SPECIAL FEATURES | SOLID FILM LUBRICANT; AXIAL TENSILE STRENGTH 4750 LBS |
| WIDTH ACROSS FLATS | 0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNJF |