fittings › straight tube to boss adapters
AS5173-0403
Straight Tube To Boss Adapter
Description
Thread Size: 63/64, female straight to male, screw thread expander, steel, AS5173 series fitting
Specifications
| Connection Style | Flared (tube) 1st end, Gasket seal (boss) 2nd end |
|---|---|
| Connection Type | Threaded external tube 1st end, Threaded internal boss 2nd end |
| Material | Steel |
| Nominallength | 1.297 |
| Outside Diameter Tube Accommodated | 0.188 inches 1st end |
| Seat Angle | 37.0 degrees 1st end |
| Specification Data | 81343-as4875/1 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Thread Class | 3a 1st end, 3b 2nd end |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) all ends |
| Thread Size | 0.375 inches 1st end, 0.438 inches 2nd end |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for AS5173-0403 — functionally equivalent.
- AN894-4-3 Listed alternate Steel
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Catalog data updated 2026-07-05. Report a data error