NSN 4520-01-191-3973 M2259423M, M22594-23M, MILH22594

Product Details | STATIONARY DUCT TYPE HEATER

4520-01-191-3973 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: M2259423M, M22594-23M, MILH22594, MIL-H-22594, MILPRF22594, MIL-PRF-22594, TFZ23M, TFZ-23M, EH23M, 106056816000, 106-056816-000, 106056816011, 106-056816-011, 830808, 83-0808, 4520-01-191-3973, 01-191-3973, 4520011913973, 011913973

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

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
45	07 OCT 1984	01-191-3973	17014 ( HEATER, DUCT TYPE, STATIONARY )

Part Number	Request Date	QTY	Origin
4520-01-191-3973	2025-11-315	7	DIBBS
4520-01-191-3973	2025-05-124	6	DIBBS
4520-01-191-3973	2025-02-42	6	DIBBS
4520-01-191-3973	2022-03-87	9	DIBBS
4520-01-191-3973	2020-09-266	3	DIBBS
4520-01-191-3973	2019-04-105	7	DIBBS
4520-01-191-3973	2018-05-148	11	DIBBS
4520-01-191-3973	2017-12-338	10	DIBBS
4520-01-191-3973	2017-05-137	7	DIBBS
4520-01-191-3973	2017-02-33	7	DIBBS
4520-01-191-3973	2015-08-223	10	DIBBS
4520-01-191-3973	2014-08-240	11	DIBBS
4520-01-191-3973	2010-09-245	6	DIBBS
4520-01-191-3973	2010-03-82	2	DIBBS

Cross Reference | NSN 4520-01-191-3973

Part Number	Cage Code	Manufacturer
106-056816-000	65586	CHROMALOX, INC. DBA OGDEN
106-056816-011	65586	CHROMALOX, INC. DBA OGDEN
83-0808	17032	VALAD ELECTRIC HEATING CORP.
EH23M	17032	VALAD ELECTRIC HEATING CORP.
M22594-23M	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-H-22594	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-PRF-22594	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
TFZ-23M	74924	INDUSTRIAL ENGINEERING AND EQUIPMENT COMPANY, INCORPORATED

Request a Quote

What Our Customers Say

Thank you very much for the excellent service and professional customer care.

Ernie G. Honeywell

The service was excellent. I can think of no improvements to date that you can make regarding internet sales.

John L. Raytheon

The representative for WBParts was efficient & handled our request in a timely & professional manner.

Karen G. General Dynamics

Tried two other sources, neither of them responded, was all done online, never spoke to anyone.

Rex S. US Airforce

The response is quick and the price is often very good. We are completely satisfied.

Patricia S. NASA

Compare

NSNs for Compare ( up to 4 ): Add 4520-01-191-3973

Compare

Related Products | NSN 4520-01-191-3973

4520-01-191-5109, 4520-01-191-6167, 4520-01-191-6168, 4520-01-191-6169, 4520-01-191-6170

Technical Data | NSN 4520-01-191-3973

Characteristic	Specifications
HEAT DELIVERY RATE	10236.0 BRITISH THERMAL UNIT
CURRENT TYPE	AC
VOLTAGE IN VOLTS	440.0
FREQUENCY IN HERTZ	60.0
PHASE	THREE
CURRENT RATING IN AMPS	6.8
HEATING ELEMENT TYPE	ELECTRIC NONIMMERSION
HEAT MEDIUM TYPE	AIR
MOUNTING TYPE	VENTILATION DUCT
HEIGHT	6.250 INCHES NOMINAL
WIDTH	20.000 INCHES NOMINAL
DEPTH	6.000 INCHES NOMINAL
INCLOSURE MATERIAL	STEEL CORROSION RESISTING
OPERATING CONTROL TYPE	ANY ACCEPTABLE
SPECIAL FEATURES	MAGNETIC
NONDEFINITIVE SPEC/STD DATA	23EH SIZE AND M TYPE
MANUFACTURERS CODE	81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-H-22594

Restrictions/Controls & Freight Information | NSN 4520-01-191-3973

Restrictions
Freight

Category	Code	Description
Shelf-Life Code:	0	Nondeteriorative
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:	U	UNCLASSIFIED
Precious Metals Indicator Code:	A	Item 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	026520	HEATERS WATER
Less than car load rating
Less than truck load rating	W	Rating Variable
Water commodity Code	736	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	E	Engineer supplies, other than those listed under code B.
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 4520-01-191-3973

Navy

Category	Code	Description
Cognizance Codes	3B	Navy-owned stocks of field level repairable DLA material Naval Inventory Control Point, Mechanicsburg
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DN	Department of the Navy
Service Organization	N	U.S. Navy
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each