| BEARING SURFACE TYPE | WASHER FACED |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR AMS 5648 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 316 OVERALL |
| NOMINAL THREAD SIZE | 1.3125 INCHES |
| NUT HEIGHT | 0.406 INCHES NOMINAL |
| NUT STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, FITTING, BULKHEAD |
| SPECIFICATION/STANDARD DATA | 81343-SAE AS5178 NATIONAL STD/SPEC |
| WIDTH ACROSS FLATS | 1.613 INCHES MINIMUM AND 1.630 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35, TYPE VI OR VII NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES | UNIFIED NATIONAL JOINT (UNJ) |