| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | PLATE |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| ALUMINUM ALLOY NUT |
| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| SURFACE TREATMENT | ANODIZE OR |
| OXIDE FILM NUT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR |
| MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE NUT |
| NUT LENGTH | 1.297 INCHES MAXIMUM |
| NUT HEIGHT | 0.375 INCHES MAXIMUM |
| PLATE THICKNESS | 0.075 INCHES MAXIMUM |
| PLATE WIDTH | 0.374 INCHES MINIMUM AND |
| 0.516 INCHES MAXIMUM |
| NUT MOUNTING PROVISION | STRAIGHT HOLES |
| 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 | 0.500 INCHES NOMINAL |
| 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 |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81352 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | AN366DF420A |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILN25027 |