Damper, Flue4520-01-596-1778

NSN 4520-01-596-1778 · NIIN 015961778

FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal

Government record, cited

Also searched as 4520-01-596-1778 · 4520015961778 · NIIN 015961778 · 01-596-1778 · FSC 4520 Space and Water Heating Equipment

Nearby stock numbers ← 4520-01-596-1733 Damper, Flue · 4520-01-596-2134 Heating Element, Electrical, Nonim →

Features

Damper,flue — FSC 4520
Mounting Method: SCREW
Shape: RECTANGULAR
Material: STEEL
Operation Method: AUTOMATIC

Identification

NSN: 4520-01-596-1778
NIIN: 015961778
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal

General Description

The Damper,flue, cataloged under National Stock Number 4520-01-596-1778, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4520-01-596-1778
Item Name	Damper,flue
FSC / FSG	4520 / 45 — Space and Water Heating Equipment
Status	ACTIVE
Mounting Method	SCREW
Shape	RECTANGULAR
Material	STEEL
Operation Method	AUTOMATIC

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 2

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

6920-01-622-40398196512 POSSIBLE MATCH

SIMULATOR,GUIDED MISSILE LAUNCHI

Possible match (shared part number)Naval Sea Systems Command

4935-01-626-52418196512 POSSIBLE MATCH

SIMULATOR,GUIDED MISSILE FLIGHT

Possible match (shared part number)Raytheon Company

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
81965-12	3/9 Design control — primary reference Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating

Related Parts

6920-01-622-4039POSSIBLE MATCH

SIMULATOR,GUIDED MISSILE LAUNCHI

8196512

4935-01-626-5241POSSIBLE MATCH

SIMULATOR,GUIDED MISSILE FLIGHT

8196512

Frequently Asked Questions

What is NSN 4520-01-596-1778?

NSN 4520-01-596-1778 is a Damper,flue, classified under FSC 4520, Space and Water Heating Equipment. Status: active.

What NSN replaces 4520-01-596-1778?

2 possible matches (shared part number, not a government interchangeability claim): 6920-01-622-4039, 4935-01-626-5241. Verify interchangeability with system specifications before substitution.

What are the specifications of 4520-01-596-1778?

Key specifications for 4520-01-596-1778: Mounting Method: SCREW; Shape: RECTANGULAR; End Item Identification: DAMPER,VOLUME CONTROL; Material: STEEL. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4520-01-596-1778 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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