CLASS 2,SIZE 3-1/2

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Federal Supply Group

Plumbing, Heating, and Waste Disposal Equipment

Federal Supply Classification

4520 Space and Water Heating Equipment

National Stock Number

4520-00-273-1149

Item Name Code

16506

Assigment Date

01/01/1963 (63 years ago)

A heat transferring unit, inclosed in a cabinet, designed to warm a stream of air by convection as it circulates over the heating elements rather than by direct radiation. Excludes:radiator, heating.

1 heat outlet quantity, hot water or steam heat medium type, 35.0 pounds per square inch gage maximum pressure limit, vertical heat delivery direction, wall suspended, room interior mounting type

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Mounting Type: wall suspended, room interior
Heat Medium Type: hot water or steam
Maximum Pressure Limit: 35.0 pounds per square inch gage
Heat Outlet Quantity: 1
Heat Delivery Direction: vertical
Heat Discharge Outlet Type: stationary
Heat Directing Device: fixed louver
Width: 12.000 inches nominal
Depth: 6.000 inches nominal
Operating Control Type: thermostatic
Heating Element Type: hot water coil and steam coil
Inclosure Material: aluminum
Heat Delivery Rate: 3300.0 british thermal unit
Special Features: magnetic permeability shall be less than 1.2 before fabrication and not greater than 2.0 after fabrication as measured in a 200 oersted field
Height: 20.000 inches nominal
Nondefinitive Spec/Std Data: 2 class and 3.500 size

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4520-00-273-1127	No Name Available	06/01/2003

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
CLASS 2,SIZE 3-1/2	Steam-Hot Wate Convection Heater
S3802-921624NM3 1-2	Steam-Hot Wate Convection Heater

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4520-00-273-1149?

The FSCG of the NSN 4520-00-273-1149 is 4520

Does the NSN 4520-00-273-1149 have a Schedule B code assigned?

Yes, the Schedule B code is 7322900000

Does NSN 4520-00-273-1149 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4520-00-273-1149 contain precious materials?

Precious metal content is unknown

Does NSN 4520-00-273-1149 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4520-00-273-1149 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963