The Damper,flue, cataloged under National Stock Number 4520-01-330-2575, 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 Specific Systems, Llc Div Specific Systems. Government technical data includes 6 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-330-2575 |
| Primary Part Number | DASN00300 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Specific Systems, Llc Div Specific Systems |
| Status | ACTIVE |
| Mounting Method | SCREW |
| Shape | RECTANGULAR |
| Sheet Metal Gage Size | 16 |
| Surface Treatment | ZINC |
| Material | STEEL |
| Operation Method | AUTOMATIC |
| 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 |
|---|---|
| T-1471-DASN00300 | Specific Systems, Llc Div Specific Systems (USA) |
| DASN00300 PRIMARY | Specific Systems, Llc Div Specific Systems (USA) |
NSN 4520-01-330-2575 is a Damper,flue, manufactured by Specific Systems, Llc Div Specific Systems, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-330-2575 has 2 manufacturer part numbers on file: T-1471-DASN00300 (Specific Systems, Llc Div Specific Systems), DASN00300 (Specific Systems, Llc Div Specific Systems).
Key specifications for DASN00300: Mounting Method: SCREW; Shape: RECTANGULAR; Overall Length: 6.000 INCHES NOMINAL IN; Overall Width: 20.000 INCHES NOMINAL IN. 6 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.