| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | PLATE |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| STEEL NUT |
| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| HARDNESS RATING | 32.0 ROCKWELL C MAXIMUM |
| NUT LENGTH | 1.296 INCHES MAXIMUM |
| NUT HEIGHT | 0.240 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
| PLATE THICKNESS | 0.075 INCHES MAXIMUM |
| PLATE WIDTH | 0.484 INCHES MINIMUM AND |
| 0.516 INCHES MAXIMUM |
| NUT MOUNTING PROVISION | COUNTERSUNK HOLES |
| MOUNTING HOLE COUNTERSINK ANGLE | 98.0 DEGREES MINIMUM AND |
| 102.0 DEGREES MAXIMUM |
| MOUNTING PROVISION LOCATION | OPPOSITE NUT PROJECTION SIDE |
| MOUNTING HOLE ARRANGEMENT STYLE | 2 HOLES |
| MOUNTING HOLE DIAMETER | 0.098 INCHES MINIMUM AND |
| 0.103 INCHES MAXIMUM |
| DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | 0.495 INCHES MINIMUM AND |
| 0.505 INCHES MAXIMUM |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH | 0.998 INCHES MINIMUM AND |
| 1.002 INCHES MAXIMUM |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |