The Cover,fluid Filter, cataloged under National Stock Number 4330-01-189-4677, 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 Spirax Sarco Inc Dba Spirax Sarco. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-189-4677 |
| Primary Part Number | SSN593-508-1863433 PIECE 2 |
| Item Name | Cover,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Spirax Sarco Inc Dba Spirax Sarco |
| Status | ACTIVE |
| Bolt Circle Hole Quantity | 6 |
| Outside Diameter | 7.250 INCHES NOMINAL IN |
| Bolt Circle Diameter | 6.375 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| SSN593-508-1863433 PIECE 2 PRIMARY | Spirax Sarco Inc Dba Spirax Sarco (USA) |
| Reference | Meaning |
|---|---|
| SSN593-508-1863433 PIECE 2 | 5/2 Secondary reference U.S. Government activity |
| SSN593-508-1863433 | D/9 Drawing number reference only U.S. Government activity |
NSN 4330-01-189-4677 is a Cover,fluid Filter, manufactured by Spirax Sarco Inc Dba Spirax Sarco, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-189-4677 has 1 manufacturer part number on file: SSN593-508-1863433 PIECE 2 (Spirax Sarco Inc Dba Spirax Sarco).
1 possible match (shared part number, not a government interchangeability claim): 4330-01-189-4679. Verify interchangeability with system specifications before substitution.
Key specifications for SSN593-508-1863433 PIECE 2: Bolt Circle Hole Quantity: 6; Outside Diameter: 7.250 INCHES NOMINAL IN; Bolt Circle Diameter: 6.375 INCHES NOMINAL IN; Material: NICKEL ALLOY. 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.