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KFN542-6
Locking Assembled Washer Nut Self
Description
Thread Size: 3/8", Head Width: 3/8
Specifications
| Counterbore Diameter | 0.412 inches nut and 0.417 inches nut |
|---|---|
| Hardness Rating | Between 39.0 rockwell c and 48.0 rockwell c |
| Locking Feature | Prevailing torque all metal design |
| Material | Steel |
| Material Specification | Mil-s-5626 military specification 1st material response nut or mil-s-5000 military specification 2nd material response nut or mil-s-6049 military specification 3rd material response nut |
| Nut Counterbore Depth | 0.087 inches nut and 0.097 inches nut |
| Nut Style | Flat with turned up edge |
| Overall Height | 0.355 |
| Special Features | Rockwell c scale 40 min and rockwell c scale 45 max washer |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification all treatment responses type 2 qq-p-416 |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.375 |
| Washer Outside Diameter | 0.660 |
| Width Across Flats | Between 0.430 inches and 0.439 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 KFN542-6. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error