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NSN 4520-01-442-5331Government record, cited

Heater, Duct Type, Stationary4520-01-442-5331

NSN 4520-01-442-5331 · NIIN 014425331 · Part number TFZU-1.8-9X4-440/3/1/24 (U4)

Indeeco Llc Dba Indeeco · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 74924

Government record, cited

NSN 4520-01-442-5331 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-442-5331. Manufacturer of record part number: TFZU-1.8-9X4-440/3/1/24 (U4).

Also searched as 4520-01-442-5331 · 4520014425331 · NIIN 014425331 · 01-442-5331 · FSC 4520 Space and Water Heating Equipment · CAGE 74924 · TFZU-1.8-9X4-440/3/1/24 (U4) · L210V0:B13782-B-A NO. 1A

Nearby stock numbers ← 4520-01-442-5330 Heater, Duct Type, Stationary · 4520-01-442-5332 Heater, Duct Type, Stationary →

Features

Heater,duct Type,stationary — FSC 4520
1 manufacturer part number on file
Manufacturer of record: Indeeco Llc Dba Indeeco

Identification

NSN: 4520-01-442-5331
NIIN: 014425331
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: TFZU-1.8-9X4-440/3/1/24 (U4)
Manufacturer: Indeeco Llc Dba Indeeco

General Description

The Heater,duct Type,stationary, cataloged under National Stock Number 4520-01-442-5331, 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 Indeeco Llc Dba Indeeco. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Heater,duct Type,stationary
FSC / FSG	4520 — Space and Water Heating Equipment (FSG 45)
Manufacturers	Indeeco Llc Dba Indeeco (CAGE 74924)

Technical Specifications

Parameter	Value
NSN	4520-01-442-5331
Primary Part Number	TFZU-1.8-9X4-440/3/1/24 (U4)
Item Name	Heater,duct Type,stationary
FSC / FSG	4520 / 45 — Space and Water Heating Equipment
Manufacturer	Indeeco Llc Dba Indeeco
Status	ACTIVE

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

Cross-Reference Index

Part Number	Manufacturer
TFZU-1.8-9X4-440/3/1/24 (U4) PRIMARY	Indeeco Llc Dba Indeeco (USA)

Reference documents

Reference	Meaning
L210V0:B13782-B-A NO. 1A	5/9 Secondary reference Indeeco Llc Dba Indeeco

No interchangeability data on file.

Other items in FSC 4520 — Space and Water Heating Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4520-00-000-0098

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-000-0099

4520-00-000-0099 · Item name not on file

4520-00-001-1240

4520-00-001-1240 · Item name not on file

4520-00-001-3518

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-3519

HEATING ELEMENT,ELECTRICAL,IMMER

4520-00-001-6052

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-6298

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-7726

HEATER,DUCT TYPE,PORTABLE

Frequently Asked Questions

What is NSN 4520-01-442-5331?

NSN 4520-01-442-5331 is a Heater,duct Type,stationary, manufactured by Indeeco Llc Dba Indeeco, classified under FSC 4520, Space and Water Heating Equipment. Status: active.

What part numbers are listed for NSN 4520-01-442-5331?

NSN 4520-01-442-5331 has 1 manufacturer part number on file: TFZU-1.8-9X4-440/3/1/24 (U4) (Indeeco Llc Dba Indeeco).

Is NSN 4520-01-442-5331 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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