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NAS509-7
Drilled Hex Nut
Description
Material - 4130 Alloy Steel Per AMS-S-6758 Finish - Cad Type II, Class 2 Per AMS-QQ-P-416 Heat Treat- 150 KSI Min Per AMS2759 Hardness - 34-38 HRC
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered |
| Countersink Angle | 110.0 degrees nominal both ends |
| Dimension A | 0.625 in |
| Dimension B | 0.700 in |
| Dimension C | 0.063 in |
| Dimension D | 0.281 in |
| Drilled Hole Diameter | 0.045 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 |
| Industry Standards/Certification | NAS509 |
| Material | Steel |
| Material Specification | Mil-s-6758,condition f-4 mil spec single material response |
| NIIN | 00-208-3747 |
| NSN | 5310-00-208-3747 |
| Nut Height | 0.281 |
| Nut Style | Hexagon |
| Specification Data | 80205-nas509 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2,class 2 fed spec single treatment response |
| Thread Class | 3b |
| Thread Dash | RH - 7 |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNJF |
| Thread Size | 0.438, 7/16-20 UNJF-3B |
| Thread T | 0.4375-20 |
| Weight | 0.015 lb |
| Width Across Flats | 0.615 inches minimum and 0.627 inches maximum |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS509L7 NAS 7/16-20 · Steel
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Catalog data updated 2026-07-05. Report a data error