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AN818-5J
Aeronautical Standard Tube Coupling Nut
Description
Coupling Nut
Specifications
| Connection Type | Flared Tube |
|---|---|
| Diameter A | 0.374 in |
| Diameter C | 0.625 in |
| Dimension A Tolerance | +0.003 in |
| Dimension C Tolerance | +0.000 in |
| Dimension J | 0.484 in |
| Dimension M | 0.683 in |
| Dimension M Tolerance | +0.005 in |
| Dimension O | 0.625 in |
| Dimension O Tolerance | -0.004 in |
| Industry Standards/Certification | AN818 |
| Material | CRES |
| NIIN | 00-684-4544 |
| NSN | 4730-00-684-4544 |
| Nut Height | 0.672 |
| Nut Style | Tube coupling |
| Surface Treatment | Passivate |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.500 |
| Thread T (MIL-S-8879) | 0.5000-20 |
| Tube Outside Diameter | 0.312 in |
| Weight | 0.03 lb |
| Width Across Flats | 0.625 |
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.
- AN818-5 AN 1/2-20 · Steel
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Catalog data updated 2026-07-05. Report a data error