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42FLW428
Locking Extended Washer Nut Self
Description
Thread Size: 1/4", Head Width: 3/8
Specifications
| Hardness Rating | Between 34.0 rockwell c and 43.0 rockwell c |
|---|---|
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Material Specification | Ams 6280 assn standard single material response or ams 6300 assn standard single material response or ams 6322 assn standard single material response |
| Nut Style | Double hexagon |
| Overall Height | 0.290 |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 3 federal specification single treatment response type 1 qq-p-416 |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.250 |
| Washer Outside Diameter | 0.444 |
| Washer Thickness | 0.040 |
| Width Across Flats | Between 0.367 inches and 0.376 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for 42FLW428. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error