nuts › self-locking extended washer nuts
42FLW820
Locking Extended Washer Nut Self
Description
Thread: 1/2-20, Thread Size: 1/2", Nut Height: 1/2", Head Width: 5/8
Specifications
| Hardness Rating | Between 34.0 rockwell c and 43.0 rockwell c |
|---|---|
| Locking Feature | Free-running all metal design |
| Material | Steel |
| Material Specification | Ms6280 assn standard single material response |
| Nut Style | Double hexagon |
| Overall Height | Between 0.539 inches and 0.559 inches |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 federal specification single treatment response |
| Temperature Rating | 450 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.50 |
| Washer Outside Diameter | Between 0.813 inches and 0.833 inches |
| Washer Thickness | Between 0.064 inches and 0.084 inches |
| Width Across Flats | Between 0.616 inches and 0.627 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 42FLW820. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error