| BEARING SURFACE TYPE | CHAMFERED |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A493, COLD WORKED ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM D4066, GROUP 1, CLASS 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE LOCKING INSERT |
| MATERIAL | STEEL COMP 316 OVERALL EXCEPT INSERT |
| NOMINAL THREAD SIZE | 1.250 INCHES |
| NUT STYLE | HEXAGON |
| NUT HEIGHT | 1.300 INCHES MINIMUM AND 1.454 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, SLF-LKG, HEX, RGLR, 1.25-7UNJC-3B |
| WIDTH ACROSS FLATS | 1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A967 ASSN STD SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | PASSIVATE OVERALL EXCEPT INSERT |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3B |
| THREAD QUANTITY PER INCH | 7 |
| THREAD SERIES | UNJC |