The Filter Element,air Conditioning, cataloged under National Stock Number 1660-01-484-8047, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Astro Air Filter Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-484-8047 |
| Primary Part Number | ES-0400-1800-.25 |
| Item Name | Filter Element,air Conditioning |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Astro Air Filter Inc |
| Status | ACTIVE |
| Maximum Air Flow Rate | 120.0 CUBIC FEET PER MINUTE |
| Body Overall Length | 17.970 INCHES MINIMUM AND 18.030 INCHES MAXIMUM IN |
| Design Type | REUSABLE |
| Style Designator | RECTANGULAR (INCL SQUARE W/ AIR BAFFLE) |
| Material | PLASTIC POLYPROPYLENE FILTERING MEDIUM |
| Material | PLASTIC ACRYLONITRILE-BUTADIENE-STYRENE (ABS) FRAME |
| Body Thickness | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM 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 |
|---|---|
| ES-0400-1800-.25 PRIMARY | Astro Air Filter Inc (USA) |
| Reference | Meaning |
|---|---|
| GF525FU0400-1800 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 1660-01-484-8047 is a Filter Element,air Conditioning, manufactured by Astro Air Filter Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-484-8047 has 1 manufacturer part number on file: ES-0400-1800-.25 (Astro Air Filter Inc).
Key specifications for ES-0400-1800-.25: Maximum Air Flow Rate: 120.0 CUBIC FEET PER MINUTE; Body Overall Length: 17.970 INCHES MINIMUM AND 18.030 INCHES MAXIMUM IN; Design Type: REUSABLE; Style Designator: RECTANGULAR (INCL SQUARE W/ AIR BAFFLE). 7 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.