The Housing Unit,impeller, cataloged under National Stock Number 1650-00-672-4428, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-672-4428 |
| Item Name | Housing Unit,impeller |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL SAE 4140 BAR PER MIL&S&5626,3.963 IN. LG,2.730 IN. OD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 20228-3 | C/1 Advisory reference — outside the item-of-supply concept Defense & Development Enterprises Llc |
| 20228-3 | 3/9 Design control — primary reference Triumph Thermal Systems - Maryland, Inc. |
NSN 1650-00-672-4428 is a Housing Unit,impeller, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-216-1071. Verify interchangeability with system specifications before substitution.
Key specifications for 1650-00-672-4428: General Characteristics Item Description: STEEL SAE 4140 BAR PER MIL&S&5626,3.963 IN. LG,2.730 IN. OD 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.
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.