The Swivel Joint,hydraulic,aircraft, cataloged under National Stock Number 1650-00-027-5289, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Tactair Fluid Controls Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-027-5289 |
| Primary Part Number | S2473-40 |
| Item Name | Swivel Joint,hydraulic,aircraft |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Style Designator | SINGLE JOINT, ELBOW DESIGN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Leg Length | 0.860 INCHES NOMINAL ALL ENDS IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 90.0 DEGREES FIRST END |
| Thread Class | 3A FIRST END A |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S2473-40 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| S2473-40 | 5/9 Secondary reference U.S. Government activity |
| S2473-40 | 5/9 Secondary reference U.S. Government activity |
| 26-901521-6 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 1650-00-027-5289 is a Swivel Joint,hydraulic,aircraft, manufactured by Tactair Fluid Controls Inc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-027-5289 has 1 manufacturer part number on file: S2473-40 (Tactair Fluid Controls Inc).
Key specifications for S2473-40: Style Designator: SINGLE JOINT, ELBOW DESIGN; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN; Leg Length: 0.860 INCHES NOMINAL ALL ENDS IN; Nominal Thread Size: 0.438 INCHES FIRST END IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1650-00-027-5289 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.