| BEARING SURFACE TYPE | CHAMFERED |
| NUT STYLE | HEXAGON |
| NUT HEIGHT | 0.803 INCHES MINIMUM AND 0.816 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS-QQ-A-225/9 OR AMS 4124 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 7075 OVERALL |
| NOMINAL THREAD SIZE | 0.5625 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, FITTING, BULKHEAD |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WIDTH ACROSS FLATS | 0.005 INCHES NOMINAL |
| SPECIFICATION/STANDARD DATA | 0U583-SAEAS5178 INTERNATIONAL STD/SPEC |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AS4841 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ALUMINUM OVERALL |