The Damper,flue, cataloged under National Stock Number 4520-00-810-2340, 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 Todd Combustion Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-810-2340 |
| Primary Part Number | 1047283 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Todd Combustion Inc |
| Status | ACTIVE |
| Mounting Method | INSERTED CENTER SHAFT |
| Shape | RECTANGULAR |
| Sheet Metal Gage Size | 11 |
| Length | 8.625 INCHES IN |
| Width | 10.750 INCHES IN |
| Positioning Holder Type | FRICTION |
| Material | STEEL |
| Operation Method | MANUAL |
| 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 |
|---|---|
| 1047283 | Instruments and Controls, Inc. Dba Instruments & Controls Inc (USA) |
| 1047283 PRIMARY | Todd Combustion Inc (USA) |
| Reference | Meaning |
|---|---|
| D-U5-07-0024 | 5/9 Secondary reference Todd Combustion Inc |
| D-5-7-24 | C/1 Advisory reference — outside the item-of-supply concept Todd Combustion Inc |
| D-5-7-24 | C/1 Advisory reference — outside the item-of-supply concept Todd Shipyards Corp Houston Div |
| 37343PC1T03 | 5/9 Secondary reference Todd Shipyards Corp |
| D5-7-24 | 5/9 Secondary reference Todd Shipyards Corp |
NSN 4520-00-810-2340 is a Damper,flue, manufactured by Todd Combustion Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-810-2340 has 2 manufacturer part numbers on file: 1047283 (Instruments and Controls, Inc. Dba Instruments & Controls Inc), 1047283 (Todd Combustion Inc).
Key specifications for 1047283: Mounting Method: INSERTED CENTER SHAFT; Shape: RECTANGULAR; Sheet Metal Gage Size: 11; Length: 8.625 INCHES IN. 8 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.