| BEARING SURFACE TYPE | FLAT |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-DTL-25027H MIL SPEC 1ST MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING AND PLASTIC POLYAMIDE NYLON OVERALL |
| NOMINAL THREAD SIZE | 0.423 INCHES |
| NUT HEIGHT | 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.736 INCHES MINIMUM AND 0.754 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325, TYPE II MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD PITCH DIAMETERS | +0.3911 TO 1.1644 INCHES |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 14 |