The Damper,flue, cataloged under National Stock Number 4520-01-441-9775, 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 Tomkins Industries, Inc Dba Ruskin Manufacturing. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-441-9775 |
| Primary Part Number | 29-005641-02D IT 001 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Tomkins Industries, Inc Dba Ruskin Manufacturing |
| Status | ACTIVE |
| Mounting Method | INSERTED CENTER SHAFT |
| Shape | ROUND |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 29-005641-02D IT 001 PRIMARY | Tomkins Industries, Inc Dba Ruskin Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| CDR82 29-005641 -02D IT001 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4520-01-441-9775 is a Damper,flue, manufactured by Tomkins Industries, Inc Dba Ruskin Manufacturing, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-441-9775 has 1 manufacturer part number on file: 29-005641-02D IT 001 (Tomkins Industries, Inc Dba Ruskin Manufacturing).
Key specifications for 29-005641-02D IT 001: Mounting Method: INSERTED CENTER SHAFT; Shape: ROUND; Material: STEEL CORROSION RESISTING; Operation Method: AUTOMATIC. 4 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.