The Tube,orifice,main, cataloged under National Stock Number 1620-00-045-9561, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1620-00-045-9561 |
| Primary Part Number | 4190952-2 |
| Item Name | Tube,orifice,main |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY MATL, 3 IN. OD, 10.968 IN. LG IN |
| 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 |
|---|---|
| 2574079 | Goodrich Corporation (USA) |
| 4190952-2 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 2574079 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 4190952-2 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
| 2574079 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
NSN 1620-00-045-9561 is a Tube,orifice,main, manufactured by Textron Aviation Inc, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-045-9561 has 2 manufacturer part numbers on file: 2574079 (Goodrich Corporation), 4190952-2 (Textron Aviation Inc).
Key specifications for 4190952-2: General Characteristics Item Description: ALUMINUM ALLOY MATL, 3 IN. OD, 10.968 IN. LG IN. 1 specification is 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 1620-00-045-9561 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.