nuts › plain hexagon nuts
NAS509L9
Nut
Description
Thread Size: 1/2", Nut Height: 3/8", Head Width: 7/8"
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 110.0 degrees nominal both ends |
| Drilled Hole Diameter | 0.043 inches minimum and 0.050 inches maximum |
| Hardness Rating | 34.0 rockwell c minimum and 38.0 rockwell c maximum |
| Hole Configuration Style | Configuration b |
| Hole Type And Quantity | 3 drilled |
| Material | Steel |
| Material Specification | Mil-s-6758,cond c4 mil spec single material response |
| Nut Height | 0.375 |
| Nut Style | Hexagon |
| Specification Data | 80205-nas 509 government standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec single treatment response |
| Thread Class | 3b |
| Thread Direction | Left-hand |
| Thread Qty | 18 |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series | UNJF |
| Thread Size | 0.562 |
| Width Across Flats | 0.863 inches minimum and 0.877 inches maximum |
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 NAS509L9. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error