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NAS1423-5LH
0.3125-24 Thread T NAS1423 Drilled Jam Machine 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 | 250.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered |
| Countersink Angle | 110.0 degrees nominal nut |
| Dimension A | 0.500 in |
| Dimension B | 0.058 in |
| Dimension C | 0.555 in |
| Dimension D | 0.125 in |
| Drilled Hole Diameter | 0.046 |
| Features | Left Hand Thread |
| 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 | NAS1423 |
| Material | Steel |
| Material Specification | Mil-s-6758 cond c1 or f4 mil spec 1st material response or mil-s-5000 cond c1 or c4 mil spec 2nd material response |
| Nut Height | 0.115 inches minimum and 0.135 inches maximum |
| Nut Style | Hexagon |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec single treatment response |
| Thread Class | 3b |
| Thread Dash | LH-5LH |
| Thread Direction | Left-hand |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNF |
| Thread Size | 0.312, 5/16-24 UNJF-3B |
| Thread T | 0.3125-24 |
| Type | Drilled Jam |
| Weight | .005 lb |
| Width Across Flats | 0.490 inches minimum and 0.502 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.
- NAS1423-5 NAS 5/16-24 · Steel
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Catalog data updated 2026-07-05. Report a data error