thread: 1/4-28, self locking, hexagon, non metallic insert, locknut, MS17825 series nut
| Specifications | |
|---|---|
| Width Across Flats | 0.430 inches minimum, 0.439 inches maximum |
| Thread Size | 0.25 inches |
| Thread Qty Per Inch (TPI) | 28 |
| Thread Series | UNJF (fine thread with external controlled root radius) |
| Thread Class | 3B |
| Thread Direction | Right-hand |
| Temperature Rating | 250 °F |
| Surface Treatment | Cadmium except insert; chromate except insert |
| Surface Treatment Specification | Class 2 Federal Specification, single treatment response, except insert, Type 2 QQ-P-416 |
| Nut Height | 0.266 inches minimum, 0.296 inches maximum |
| Nut Style | Hexagon slotted |
| Material (Nut) | Steel |
| Material (Insert) | Plastic polyamide locking insert |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Bearing Surface Type | Washer faced |
