fittings › boss nipples
AN815-16
Aeronautical Standard Boss Nipple
Description
Union
Specifications
| Alternate Item Number | AS5174-1616 |
|---|---|
| Alternate Part Number | AS5174-1616 |
| Connection Style | Flared w/ gasket seal (boss) all ends |
| Connection Type | Flare, Threaded external boss all ends |
| Dimension M | 2 3/16 in |
| Head Angle | 37 º |
| Industry Standards/Certification | AN815 |
| Material | Steel |
| Media For Which Designed | Hydraulic fluid 1st response, Oxygen, gaseous 2nd response |
| NIIN | 00-187-0490 |
| NSN | 4730-00-187-0490 |
| Nominallength | 2.188 |
| Reference E | 1.625 in |
| Specification Data | 88044-an815 government standard |
| Style Designator | Flared w/ center wrenching facility |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec 1st treatment response and mil-h-6083 mil spec 2nd treatment response |
| Thread Class | 3a all ends |
| Thread Qty Per Inch (tpi) | 12 all ends |
| Thread Series Designator | Unj all ends |
| Thread Size | 1.312 inches all ends |
| Thread Size (Reference) | 1 5/16-12 |
| Tube Outside Diameter | 1 in |
| Weight | 0.47 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for AN815-16 — functionally equivalent.
- AS5174-1616 Listed alternate 1-5/16-12 · Steel
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Catalog data updated 2026-07-05. Report a data error