| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE LOCKING INSERT |
| STEEL COMP 301 OR |
| STEEL COMP 302 OR |
| STEEL COMP 302B OR |
| STEEL COMP 303 OR |
| STEEL COMP 303SE OR |
| STEEL COMP 304 OR |
| STEEL COMP 304L OR |
| STEEL COMP 305 OR |
| STEEL COMP W214 OR |
| STEEL COMP 309 OR |
| STEEL COMP 309S OR |
| STEEL COMP 310 OR |
| STEEL COMP 310S OR |
| STEEL COMP M3 OR |
| STEEL COMP 316 OR |
| STEEL COMP 316L OR |
| STEEL COMP 317 OR |
| STEEL COMP 321 OR |
| STEEL COMP 347 OR |
| STEEL COMP 348 OR |
| STEEL COMP 384 OR |
| STEEL COMP 385 NUT |
| NUT STYLE | HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| BEARING SURFACE TYPE | CHAMFERED |
| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT |
| 66 FED STD ALL MATERIAL RESPONSES NUT |
| SURFACE TREATMENT | PASSIVATE NUT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| NUT HEIGHT | 0.298 INCHES MINIMUM AND |
| 0.328 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.553 INCHES MINIMUM AND |
| 0.564 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 88.0 DEGREES NOMINAL NUT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS16228-5C |