The Filter Unit,water Purification,u, cataloged under National Stock Number 4610-01-503-5260, is classified within Federal Supply Class 4610 (Water Purification Equipment) of the Water Purification and Sewage Treatment group. The manufacturer of record is Cascade Designs Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4610-01-503-5260 |
| Primary Part Number | 56431 |
| Item Name | Filter Unit,water Purification,u |
| FSC / FSG | 4610 / 46 — Water Purification Equipment |
| Manufacturer | Cascade Designs Inc |
| Status | ACTIVE |
| Filtration Rating in Microns | 0.2 NOMINAL |
| Feedwater Impurities Type | BACTERIA AND VIRUSES |
| Features Provided | FILTER ELEMENT |
| Maximum Discharge Flow Rate | 1.25 LITERS PER MINUTE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 56431 PRIMARY | Cascade Designs Inc (USA) |
| Reference | Meaning |
|---|---|
| 02248 | 5/9 Secondary reference Cascade Designs Inc |
| 02241 | 5/9 Secondary reference Cascade Designs Inc |
NSN 4610-01-503-5260 is a Filter Unit,water Purification,u, manufactured by Cascade Designs Inc, classified under FSC 4610, Water Purification Equipment. Status: active.
NSN 4610-01-503-5260 has 1 manufacturer part number on file: 56431 (Cascade Designs Inc).
1 possible match (shared part number, not a government interchangeability claim): 4010-01-670-3878. Verify interchangeability with system specifications before substitution.
Key specifications for 56431: Overall Height: 7.500 INCHES NOMINAL IN; Filtration Rating in Microns: 0.2 NOMINAL; Feedwater Impurities Type: BACTERIA AND VIRUSES; Features Provided: FILTER ELEMENT. 4 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.
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.