Product Details | STATIONARY DUCT TYPE HEATER

4520-01-259-5765 A device capable of producing heat from gas, liquid fuel, or an electrical heating element designed for permanent installation in sheet metal ducts of a forced air circulating system. It consists of (1) a finned, steel burner tube, a combustion air blower, a control panel, and a constant level fuel supply system or (2) a device having a heating element which when connected to an electrical source, directly imparts heat. It may be provided with a flanged outer casing to facilitate mounting in planned or existing duct work. Circulation of the heated air is achieved by use of a blower or fan not integral with the heating unit.

Part Alternates: TFZ35M, TFZ-35M, 4520-01-259-5765, 01-259-5765, 4520012595765, 012595765

Plumbing, Heating, and Waste Disposal Equipment | Space and Water Heating Equipment

Supply Group (FSG) NSN Assign. NIIN
45 18 JUL 1987 01-259-5765

Demand History | NSN 4520-01-259-5765

Part Number Request Date QTY Origin
TFZ-35M 2025-10-290 8 DIBBS
4520-01-259-5765 2025-06-163 1 United States
TFZ-35M 2025-04-92 8 DIBBS
TFZ-35M 2024-08-234 4 DIBBS
TFZ-35M 2024-06-154 5 DIBBS
TFZ-35M 2023-10-282 3 DIBBS
TFZ-35M 2023-03-67 3 DIBBS
TFZ-35M 2021-12-363 2 DIBBS
TFZ-35M 2021-11-308 2 DIBBS
TFZ35M 2021-07-208 1 United States
TFZ-35M 2021-06-153 11 DIBBS
TFZ-35M 2021-02-41 4 DIBBS
TFZ-35M 2020-11-307 9 DIBBS
TFZ-35M 2020-08-226 3 DIBBS
TFZ-35M 2020-07-204 3 DIBBS
TFZ35M 2020-01-27 2 United States
TFZ-35M 2019-12-345 3 DIBBS
TFZ-35M 2019-05-127 6 DIBBS
4520-01-259-5765 2018-08-220 6 DIBBS
4520-01-259-5765 2018-03-63 2 DIBBS
4520-01-259-5765 2018-01-21 2 DIBBS
4520-01-259-5765 2017-10-292 3 DIBBS
4520-01-259-5765 2017-04-120 2 DIBBS
4520-01-259-5765 2017-02-52 2 DIBBS
4520-01-259-5765 2015-07-211 1 DIBBS
4520-01-259-5765 2015-03-81 2 DIBBS
4520-01-259-5765 2014-04-96 2 DIBBS
4520-01-259-5765 2014-01-05 1 DIBBS
4520-01-259-5765 2012-08-214 4 DIBBS
4520-01-259-5765 2011-09-256 4 DIBBS
4520-01-259-5765 2010-11-314 5 DIBBS
4520-01-259-5765 2010-10-292 2 DIBBS

Cross Reference | NSN 4520-01-259-5765

Part Number Cage Code Manufacturer
TFZ-35M 74924 INDUSTRIAL ENGINEERING AND EQUIPMENT COMPANY, INCORPORATED

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Technical Data | NSN 4520-01-259-5765

Characteristic Specifications
CURRENT TYPE AC
VOLTAGE IN VOLTS 440.0
PHASE THREE
HEATING ELEMENT TYPE ELECTRIC NONIMMERSION
HEAT MEDIUM TYPE AIR

Restrictions/Controls & Freight Information | NSN 4520-01-259-5765

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 026500 HEATERS WALL INSERT/BASEBOARD TYPE
Less than car load rating
Less than truck load rating Q 70.0
Water commodity Code 576 unknown
Originating Activity Code AX Defense Supply Center Columbus
Columbus, OH 43216-5000
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 4520-01-259-5765

Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each