| BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1021 OR STEEL COMP 1030 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1137 OR STEEL COMP 1213 OVERALL |
| NOMINAL THREAD SIZE | 1.250 INCHES |
| NUT STYLE | HEXAGON |
| NUT HEIGHT | 1.300 INCHES MINIMUM AND 1.454 INCHES MAXIMUM |
| SPECIAL FEATURES | SAFETY CRITICAL THREAD PER FED STD H28/20 SYSTEM 22 |
| WIDTH ACROSS FLATS | 1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |