The Damper,flue, cataloged under National Stock Number 4520-01-089-4557, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-089-4557 |
| Primary Part Number | 11453912 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Shape | RECTANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 11453912 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 4520PL2071749 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 11453912 | 5/1 Secondary reference Raytheon Company |
NSN 4520-01-089-4557 is a Damper,flue, manufactured by Us Army Aviation and Missile Command, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-089-4557 has 1 manufacturer part number on file: 11453912 (Us Army Aviation and Missile Command).
Key specifications for 11453912: Overall Height: 2.340 INCHES NOMINAL IN; Shape: RECTANGULAR; Overall Length: 7.940 INCHES NOMINAL IN; Overall Width: 6.250 INCHES NOMINAL IN. 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.
NSN 4520-01-089-4557 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.