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AN818-3J
Aeronautical Standard Tube Coupling Nut
Description
Coupling Nut
Specifications
| Connection Type | Flared Tube |
|---|---|
| Diameter A | 0.242 in |
| Diameter C | 0.437 in |
| Dimension A Tolerance | +0.003 in |
| Dimension C Tolerance | +0.000 in |
| Dimension J | 0.375 in |
| Dimension M | 0.604 in |
| Dimension M Tolerance | +0.005 in |
| Dimension O | 0.438 in |
| Dimension O Tolerance | -0.004 in |
| Industry Standards/Certification | AN818 |
| Material | CRES |
| Material Specification | Qq-s-763 fed spec single material response |
| NIIN | 00-540-0488 |
| NSN | 4730-00-540-0488 |
| Nut Height | 0.604 |
| Nut Style | Tube coupling |
| Specification Data | 88044-an818 government standard |
| Surface Treatment | Passivate |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNJF |
| Thread Size | 0.375 |
| Thread T (MIL-S-8879) | 0.3750-24 |
| Tube Outside Diameter | 0.188 in |
| Weight | 0.012 lb |
| Width Across Flats | 0.438 |
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Catalog data updated 2026-07-05. Report a data error