The Filter Element,fluid, cataloged under National Stock Number 4330-01-035-0408, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Compass Water Solutions, Inc. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-035-0408 |
| Primary Part Number | 611-503 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Compass Water Solutions, Inc |
| Status | ACTIVE |
| Body Diameter | 6.000 INCHES NOMINAL IN |
| Body Overall Length | 11.000 INCHES NOMINAL IN |
| Filtration Rating in Microns | 2.0 ABSOLUTE |
| Flow Direction | INSIDE OUT |
| Design Type | NONREUSABLE |
| Temp Rating | 33.0 FAHRENHEIT MINIMUM AND 300.0 FAHRENHEIT MAXIMUM DEGF |
| Style Designator | CYLINDRICAL W/OUT CONTAINER |
| Body Inside Diameter | 3.250 INCHES NOMINAL IN |
| Differential Pressure | ERR-060 |
| Media for Which Designed | WATER |
| Material | GLASS FIBER AND PAPER FILTERING MEDIUM |
| 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 |
|---|---|
| C6011-19P1 | Fluitek Corp (USA) |
| 611-503 PRIMARY | Compass Water Solutions, Inc (USA) |
| Reference | Meaning |
|---|---|
| 611-503 | 5/9 Secondary reference Separation & Recovery Systems Inc |
| EB-12-CG-1 | C/1 Advisory reference — outside the item-of-supply concept Separation & Recovery Systems Inc |
| 069-1 ITEM 37 | C/1 Advisory reference — outside the item-of-supply concept Separation & Recovery Systems Inc |
| EB-12-CG-1 | 3/2 Design control — primary reference U.S. Government activity |
| 070-27 | C/1 Advisory reference — outside the item-of-supply concept Separation & Recovery Systems Inc |
NSN 4330-01-035-0408 is a Filter Element,fluid, manufactured by Compass Water Solutions, Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-035-0408 has 2 manufacturer part numbers on file: C6011-19P1 (Fluitek Corp), 611-503 (Compass Water Solutions, Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5915-01-089-0830, 4410-01-373-2878. Verify interchangeability with system specifications before substitution.
Key specifications for 611-503: Body Diameter: 6.000 INCHES NOMINAL IN; Body Overall Length: 11.000 INCHES NOMINAL IN; Filtration Rating in Microns: 2.0 ABSOLUTE; Flow Direction: INSIDE OUT. 11 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.