Space and Water Heating Equipment - Canada (CA)
Federal Supply Class (FSC): 4520
NATO Supply Classification Class (NSC): 4520
Federal Supply Group (FSG): 45 Plumbing, Heating, and Waste Disposal Equipment
NATO Supply Classification Group (NSG): 45 Plumbing, Heating, and Waste Disposal Equipment
Items Managed by Canada (CA) - NCB is 20 or 21
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NSN Format for Space and Water Heating Equipment
Codified by Canada
45 | 20 | 21 | XXX | XXXX | |||
---|---|---|---|---|---|---|---|
Group FSG | Class | NCB | Identifier | ||||
FSC Federal Supply Class | NIIN | ||||||
NSN |
NATO Supply Class 4520 is a classification within NATO Supply Group 45, which is dedicated to Plumbing, Heating, And Waste Disposal Equipment.
NATO Supply Class 4520 specifically focuses on Space And Water Heating Equipment. This class includes various types of equipment used for heating spaces and water in different settings. It encompasses a wide range of heating devices and systems, such as boilers, furnaces, heaters, radiators, heat pumps, and water heaters.
The equipment classified under NATO Supply Class 4520 is designed to provide heating solutions for both residential and commercial purposes. These heating systems are essential for maintaining comfortable temperatures in buildings, as well as for heating water for various applications, such as bathing, cooking, and cleaning.
It is important to note that NATO Supply Class 4520 is part of the broader NATO Supply Group 45, which covers a wide range of plumbing, heating, and waste disposal equipment. This group includes various classes that focus on different aspects of these equipment categories.
By categorizing equipment into specific supply classes and groups, NATO aims to streamline procurement processes and facilitate efficient logistics management for member nations. This classification system helps ensure that the right equipment is readily available for military and civilian operations within the NATO framework.

Includes Boilers, 15 pounds WSP and under (for boilers over 15 pounds WSP, see FSC 4410); Domestic Water Storage Tanks through 100 gallon capacity; Fireplace Heaters; Furnaces; Space Heaters; Heating Radiators; Immersion Heaters; Water Heaters, through 100 gallon recovery capacity (for heaters over 100 gallons recovery capacity, see FSC 4410).
Excludes Vehicle Heaters; (FSC 2540); Aircraft Heaters (FSC 1660).
Frequently Asked Questions(FAQ) for Federal Supply Class 4520
- What is Federal Supply Class 4520?
- FSC 4520 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 4520) in the USA for supply items codified in the category of Space and Water Heating Equipment.
- What is NATO Supply Classification Class 4520?
- NSC 4520 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 4520 in the USA) for supply items codified in the category of Space and Water Heating Equipment.
- Which Federal Supply Group is FSC 4520 in?
- FSC 4520 is in Federal Supply Group (FSG) 45 which contains Plumbing, Heating, and Waste Disposal Equipment.
- Which NATO Supply Classification Group is NSC 4520 in?
- NSC 4520 is in NATO Supply Classification Group (NSG) 45 which contains Plumbing, Heating, and Waste Disposal Equipment.
Supply Items Included in Federal Supply Class 4520
- What is a Space Heater? 62 Items
- A Space Heater (HEATER,SPACE) is a device designed to burn various types of fuel within an inclosure which protects and confines the fire. It is used for the purpose of raising the temperature of the air in its immediate vicinity. The inclosure may be vented. Excludes HEATER, DUCT TYPE, PORTABLE and HEATER, SPACE, ELECTRIC.
- What is an Electric Space Heater? 138 Items
- An Electric Space Heater (HEATER,SPACE,ELECTRIC) is a device having a heating element which when connected to an electrical source, directly imparts heat. Circulation of the heated air may be achieved by an integral blower or fan. For space heaters other than electric, see HEATER, SPACE.
- What is a Heating Radiator? 20 Items
- A Heating Radiator (RADIATOR,HEATING) is a heat transferring unit designed to transfer heat to surrounding air by radiation. The unit is exposed directly to the space served and it is generally connected to some type of heat generating unit, such as a steam or hot water heating boiler, but may have an integral gas or electric heating unit. Excludes HEATER, CONVECTION, STEAM-HOT WATER.
- What is a Heating Radiator Valve? 34 Items
- A Heating Radiator Valve (VALVE,RADIATOR,HEATING) is a valve specifically designed for installation in the supply line of a heating radiator. It has a female inlet and a ground joint union nut with a male iron pipe threaded tailpiece outlet.
- What is a Steam Air Venting Valve? 10 Items
- A Steam Air Venting Valve (VALVE,AIR VENTING,STEAM) is an automatic valve designed to relieve, automatically, accumulated air in various types of steam heating systems.
- What is a Hot Water Storage Tank? 14 Items
- A Hot Water Storage Tank (TANK,HOT WATER STORAGE) is an item formed of metal, cylindrical in shape, with openings for pipe connections. Its primary purpose is to store heated water for distribution to various desired outlets.
- What is a Duct Type Ventilation Heater? 15 Items
- A Duct Type Ventilation Heater (HEATER,VENTILATION,DUCT TYPE) is a heat transferring unit utilizing a separate source of steam or hot water as the heat transfer medium. It consists of finned parallel tubes joined together by a header or headers and is designed for installation in the ducts of a forced air circulating system. It may be provided with a flanged outer casing to facilitate mounting of the unit 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.
- What is an Immersion Type Electrical Heating Element? 12 Items
- An Immersion Type Electrical Heating Element (HEATING ELEMENT,ELECTRICAL,IMMERSION TYPE) is an electrical device in the form of a resistor consisting of a resistance wire, an insulating material, and a sheath. It is designed to transform electrical current into heat while immersed in a liquid to be heated or in contact with materials to be melted. It may include an automatic control to regulate the amount of heat generated.
- What is a Portable Duct Type Heater? 32 Items
- A Portable Duct Type Heater (HEATER,DUCT TYPE,PORTABLE) is a heater equipped with integral connection(s) for attaching duct(s) to direct heat to engine surface, railroad cars, warehouses, tents, and the like. It is equipped with a blower (fan) and must be mounted on skids, wheels, and the like or capable of being hand-carried. Excludes HEATER, SPACE.
- What is a Flue Damper? 19 Items
- A Flue Damper (DAMPER,FLUE) is a cast iron or sheet metal plate designed to be installed in a boiler, heater, stove, or furnace flue pipe to control the draft, and/or in an air duct to control the passage of air. Excludes VALVE, BUTTERFLY.
- What is an Air Conditioning-Heating Elbow? 41 Items
- An Air Conditioning-Heating Elbow (ELBOW,AIR CONDITIONING-HEATING) is a fitting used to connect two sections of air conditioning-heating flue pipes of the same cross-sectional shape to form an angular turn.
- What is an Air Conditioning-Heating Pipe? 95 Items
- An Air Conditioning-Heating Pipe (PIPE,AIR CONDITIONING-HEATING) is a shaped product of sheet metal; round, rectangular, or square in cross-sectional shape. It is uniform throughout its length. Used to conduct air or gas fumes from one area to another.
- What is a Nonimmersion Type Electrical Heating Element? 20 Items
- A Nonimmersion Type Electrical Heating Element (HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE) is an electrical device in the form of a resistor consisting of a resistance wire, an insulating material, and may be sheathed. Includes infrared elements. It is designed to transform electrical current into heat. It may include an automatic control to regulate the amount of heat generated.
- What is a Portable Humidifier? 18 Items
- A Portable Humidifier (HUMIDIFIER,PORTABLE) is an item which converts water into fine cool vapors by mechanical means. It may be used in a "sick room" with or without medication, or any enclosed area for the purpose of increasing its relative humidity. For items converting water into hot vapor (steam) by means of heat, see VAPORIZER, MEDICINAL.
- What is an Air Conditioning-Heating Adapter? 38 Items
- An Air Conditioning-Heating Adapter (ADAPTER,AIR CONDITIONING-HEATING) is a fitting, tubular at one end and other than tubular at the other end. It is used to connect two sections of air conditioning-heating pipe or to connect air conditioning-heating pipe to air conditioning-heating units.
- What is an Exhaust Pipe? 15 Items
- An Exhaust Pipe (PIPE,EXHAUST) is a rigid tubular item designed to direct the exhaust gases away from an engine, heater, or the like. For flexible items, see HOSE, METALLIC.