The Filter Media,air Conditioning, cataloged under National Stock Number 4130-01-239-4573, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is General Dynamics Mission Systems, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4130-01-239-4573 |
| Primary Part Number | 71-2704521-1 |
| Item Name | Filter Media,air Conditioning |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | General Dynamics Mission Systems, Inc. |
| Status | ACTIVE |
| Filtering Media Design | HONEYCOMB SINGLE FILTERING MEDIA RESPONSE |
| Body Overall Length | 3.180 INCHES NOMINAL IN |
| Design Type | REUSABLE |
| Supplementary Features | CRITICAL APPLICATION ITEM (CAI) |
| Criticality Code Justification | SUPP |
| Style Designator | RECTANGULAR (INCL SQUARE) |
| Material Document and Classification | MIL-C-7438 MIL SPEC SINGLE MATERIAL RESPONSE FILTERING MEDIUM |
| Material | ALUMINUM FILTERING MEDIUM |
| Body Thickness | 0.380 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 71-2704521-1 PRIMARY | General Dynamics Mission Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 71-2704521-1 | 5/9 Secondary reference Gte Government Systems Corp Strategic Systems Div |
NSN 4130-01-239-4573 is a Filter Media,air Conditioning, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-01-239-4573 has 1 manufacturer part number on file: 71-2704521-1 (General Dynamics Mission Systems, Inc.).
Key specifications for 71-2704521-1: Filtering Media Design: HONEYCOMB SINGLE FILTERING MEDIA RESPONSE; Body Overall Length: 3.180 INCHES NOMINAL IN; Design Type: REUSABLE; Supplementary Features: CRITICAL APPLICATION ITEM (CAI). 9 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.