| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 1.3125 INCHES |
| NUT STYLE | DOUBLE HEXAGON |
| PRECIOUS MATERIAL AND LOCATION | OVERALL SILVER |
| PRECIOUS MATERIAL | SILVER |
| WASHER OUTSIDE DIAMETER | 2.071 INCHES MINIMUM AND 2.081 INCHES MAXIMUM |
| WASHER THICKNESS | 0.223 INCHES MINIMUM AND 0.233 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 1.551 INCHES MINIMUM AND 1.564 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES | UNIFIED NATIONAL JOINT (UNJ) |