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AN818-2J
Aeronautical Standard Tube Coupling Nut
Description
Coupling Nut
Specifications
| Connection Type | Flared Tube |
|---|---|
| Diameter A | 0.180 in |
| Diameter C | 0.375 in |
| Dimension A Tolerance | +0.003 in |
| Dimension C Tolerance | +0.000 in |
| Dimension J | 0.312 in |
| Dimension M | 0.542 in |
| Dimension M Tolerance | +0.005 in |
| Dimension O | 0.375 in |
| Dimension O Tolerance | -0.004 in |
| End Application | Ohio class ssn (trident) grumman a10 aircraft; 23n ship |
| Industry Standards/Certification | AN818 |
| Material | CRES |
| Material Specification | 66 federal standard single material response |
| NIIN | 00-540-4363 |
| NSN | 4730-00-540-4363 |
| Nut Height | 0.531 |
| Nut Style | Tube coupling |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Type 1 federal specification single treatment response qq-p-35 |
| Thread Class | 3b |
| 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 |
| Thread T (MIL-S-8879) | 0.3125-24 |
| Tube Outside Diameter | 0.125 in |
| Weight | 0.0085 lb |
| Width Across Flats | 0.375 |
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Catalog data updated 2026-07-05. Report a data error