The Filter,2 in HP Y, cataloged under National Stock Number 4470-00-889-2301, is classified within Federal Supply Class 4470 (Nuclear Reactors) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4470-00-889-2301 |
| Item Name | Filter,2 in HP Y |
| FSC / FSG | 4470 / 44 — Nuclear Reactors |
| Status | ACTIVE |
| General Characteristics Item Description | 2IN.,PRESSURE RELIEF SYSTEM IN |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 51520-1B | 3/1 Design control — primary reference Solventum Purification Inc. Div Filtration and Separation Division |
| 610713 | 5/1 Secondary reference Solventum Purification Inc. Div Filtration and Separation Division |
| 51520-1 | 5/1 Secondary reference Solventum Purification Inc. Div Filtration and Separation Division |
NSN 4470-00-889-2301 is a Filter,2 in HP Y, classified under FSC 4470, Nuclear Reactors. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 1420-01-069-3557, 5920-01-590-3401, 6105-01-719-1689. Verify interchangeability with system specifications before substitution.
Key specifications for 4470-00-889-2301: General Characteristics Item Description: 2IN.,PRESSURE RELIEF SYSTEM IN; Criticality Code Justification: ZZZY; Part Name Assigned by Controlling Agency: 2 IN HP Y FILTER IN; Reference Number Differentiating Characteristics: SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS. 3 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 4470-00-889-2301 has DEMIL Code F. 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.