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AN818-6D
AN Fitting Nut
Description
Coupling Nut
Specifications
| Connection Type | Flared Tube |
|---|---|
| Diameter A | 0.440 in |
| Diameter C | 0.687 in |
| Dimension A Tolerance | +0.003 in |
| Dimension C Tolerance | +0.000 in |
| Dimension J | 0.500 in |
| Dimension M | 0.724 in |
| Dimension M Tolerance | +0.010 in |
| Dimension O | 0.688 in |
| Dimension O Tolerance | -0.004 in |
| Industry Standards/Certification | AN818 |
| Material | Aluminum |
| Material Specification | T6 federal specification single material response qq-a-225/4 |
| Nut Height | 0.719 |
| Nut Style | Tube coupling |
| Size No. Alum | 6D |
| Size No. SS | 6J |
| Size No. Steel | 6 |
| Specification Data | 88044-an818 government standard |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Cl 2 military specification single treatment response type 2 mil-a-8525 |
| Thread Class | 3a |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.562, 9/16-18 |
| Thread T (MIL-S-8879) | 0.5625-18 |
| Tube O.D. | 3/8 |
| Tube Outside Diameter | 0.375 in |
| Weight | 0.015 lb |
| Width Across Flats | Between 0.684 inches and 0.691 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN818-6D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error