nuts › self-locking hexagon nuts
NAS509-5
Locking Hexagon Nut Self
Description
Hex head, drilled, steel, self locking, NAS509 series nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered |
| Countersink Angle | 110.0 degrees both ends |
| Dimension A | 0.500 in |
| Dimension B | 0.555 in |
| Dimension C | 0.058 in |
| Dimension D | 0.219 in |
| Drilled Hole Diameter | Between 0.045 inches and 0.050 inches |
| Hardness Rating | Between 34.0 rockwell c and 38.0 rockwell c |
| Hole Configuration Style | Configuration b |
| Hole Type And Quantity | 3 drilled |
| Industry Standards/Certification | NAS509 |
| Material | Steel |
| Material Specification | Cond f-4 military specification single material response mil-s-6758 |
| NIIN | 00-208-3755 |
| NSN | 5310-00-208-3755 |
| Nut Height | 0.219 |
| Nut Style | Hexagon |
| Surface Treatment | Cadmium and chromate |
| Thread Class | 3b |
| Thread Dash | RH - 5 |
| 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 | 0.312, 5/16-24 UNJF-3B |
| Thread T | 0.3125-24 |
| Weight | 0.01 lb |
| Width Across Flats | Between 0.490 inches and 0.502 inches |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error