The Filter Unit,air Purification Sys, cataloged under National Stock Number 4460-01-352-1828, is classified within Federal Supply Class 4460 (Air Purification Equipment) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4460-01-352-1828 |
| Primary Part Number | 6181557 |
| Item Name | Filter Unit,air Purification Sys |
| FSC / FSG | 4460 / 44 — Air Purification Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | 16.00 IN LG,16.00 IN W;W/2 HANDLES.FRAME,HANDLES AND RETAINER BAR MADE OF CORROSION RESISTING STEEL PER QQ-S-763 IN |
| 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 |
|---|---|
| 6181557 | Raytheon Company (USA) |
| 6181557 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87126-B-1 | 5/9 Secondary reference Industrial Marketing Systems Inc Div of Enviro Energy Corp |
| 6181557 | 5/2 Secondary reference U.S. Government activity |
NSN 4460-01-352-1828 is a Filter Unit,air Purification Sys, manufactured by Naval Sea Systems Command, classified under FSC 4460, Air Purification Equipment. Status: active.
NSN 4460-01-352-1828 has 2 manufacturer part numbers on file: 6181557 (Raytheon Company), 6181557 (Naval Sea Systems Command).
Key specifications for 6181557: General Characteristics Item Description: 16.00 IN LG,16.00 IN W;W/2 HANDLES.FRAME,HANDLES AND RETAINER BAR MADE OF CORROSION RESISTING STEEL PER QQ-S-763 IN; End Item Identification: CIWS MK 15 BLK I ECP-PW 7209. 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.