PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TNM41-1Heater,space,electric

Valad Electric Heating Corp. · NSN 4520-00-240-8311 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-240-8311 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-240-8311. Primary manufacturer part number: TNM41-1.
Features
  • Heater,space,electric — FSC 4520
  • Mounting Type: FLOOR-WALL
  • Heating Element Type: ELECTRIC NONIMMERSION
  • Heat Outlet Quantity: 3
  • Outlet Position: 90 DEG APART
  • Width: 22.000 INCHES NOMINAL IN
  • Frequency in Hertz: 60.0
  • Phase: SINGLE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,space,electric, cataloged under National Stock Number 4520-00-240-8311, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Valad Electric Heating Corp.. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-00-240-8311
Primary Part NumberTNM41-1
Item NameHeater,space,electric
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerValad Electric Heating Corp.
StatusACTIVE
Mounting TypeFLOOR-WALL
Heating Element TypeELECTRIC NONIMMERSION
Heat Outlet Quantity3
Outlet Position90 DEG APART
Width22.000 INCHES NOMINAL IN
Frequency in Hertz60.0
PhaseSINGLE
Current Rating in Amps1.1
Voltage in Volts440.0
Depth6.000 INCHES NOMINAL IN
Heat Delivery Rate1708.0 BRITISH THERMAL UNIT
Inclosure MaterialSTEEL
Current TypeAC OR DC
Height7.000 INCHES NOMINAL IN
Heat Directing DeviceFIXED LOUVER
Heat Delivery DirectionHORIZONTAL AND VERTICAL
Surface TreatmentZINC
Operating Control TypeHAND SWITCH
Heat Discharge Outlet TypeSTATIONARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4520-00-036-5932G123-21TYPET INTERCHANGEABLE
Heater,space,electric
Valad Electric Heating Corp.
4520-00-036-5934252-X21P18948-4 INTERCHANGEABLE
Heater,space,electric
Indeeco Llc Dba Indeeco
2530-00-047-445526574 INTERCHANGEABLE
Valve,brake Pneumatic
Blue Bird Body Co
5950-00-070-186180ES26T26CT INTERCHANGEABLE
Transformer,power
Abbott Technologies, Inc
3110-00-156-8137 INTERCHANGEABLE
Bearing,ball,annular
3930-00-175-0110 INTERCHANGEABLE
Back Rest,load
5996-00-224-6175 INTERCHANGEABLE
Amplifier,audio Frequency
5975-00-234-48686635 INTERCHANGEABLE
Panel,blank
Ango Electronics Corporation Dba Par Metal Products
4520-00-240-8312 INTERCHANGEABLE
Heater,space,electric
4520-00-240-8313 INTERCHANGEABLE
Heater,space,electric
Cross-Reference Index
Part NumberManufacturer
TNM41-1 Valad Electric Heating Corp. (USA)
T45-802M Acme Electric Heating Corp (USA)
17H3360 General Stores Supply Office (USA)
4520PL1318678 Jednolity Indeks Materialowy - Uniform Material Index (POL)
003-057042-001 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
MILH22663 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A9211 Indeeco Llc Dba Indeeco (USA)
252-X21-P-18948-2 Indeeco Llc Dba Indeeco (USA)
S3802-3135421 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MIL-H-22663 TYPE T-NM Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
199B500W220-440V Wesix (USA)
66-05 Valad Electric Heating Corp. (USA)
252-X21P18948-2 Zf Industrieantriebe Witten Gmbh (DEU)
303-11 Hensley and Gibbs (USA)
690-14NMTG Indeeco Llc Dba Indeeco (USA)
690-14-NM-TF Indeeco Llc Dba Indeeco (USA)
Related Parts
4520-00-036-5932INTERCHANGEABLE
HEATER,SPACE,ELECTRIC
G123-21TYPET
4520-00-036-5934INTERCHANGEABLE
HEATER,SPACE,ELECTRIC
252-X21P18948-4
2530-00-047-4455INTERCHANGEABLE
VALVE,BRAKE PNEUMATIC
26574
5950-00-070-1861INTERCHANGEABLE
TRANSFORMER,POWER
80ES26T26CT
3110-00-156-8137INTERCHANGEABLE
BEARING,BALL,ANNULAR
3930-00-175-0110INTERCHANGEABLE
BACK REST,LOAD
5996-00-224-6175INTERCHANGEABLE
AMPLIFIER,AUDIO FREQUENCY
5975-00-234-4868INTERCHANGEABLE
PANEL,BLANK
6635
4520-00-240-8312INTERCHANGEABLE
HEATER,SPACE,ELECTRIC
4520-00-240-8313INTERCHANGEABLE
HEATER,SPACE,ELECTRIC
4520-00-240-8314INTERCHANGEABLE
HEATER,SPACE,ELECTRIC
5940-00-242-0947INTERCHANGEABLE
POST,BINDING,ELECTRICAL
15

Frequently Asked Questions

What is NSN 4520-00-240-8311?

NSN 4520-00-240-8311 is a Heater,space,electric, manufactured by Valad Electric Heating Corp., classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-240-8311?

NSN 4520-00-240-8311 has 16 cross-referenced part numbers: TNM41-1 (Valad Electric Heating Corp.), T45-802M (Acme Electric Heating Corp), 17H3360 (General Stores Supply Office), 4520PL1318678 (Jednolity Indeks Materialowy - Uniform Material Index), 003-057042-001 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc) and 11 more.

What NSN replaces 4520-00-240-8311?

There are 12 known substitutes for 4520-00-240-8311: 4520-00-036-5932, 4520-00-036-5934, 2530-00-047-4455 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TNM41-1?

Key specifications for TNM41-1: Mounting Type: FLOOR-WALL; Heating Element Type: ELECTRIC NONIMMERSION; Heat Outlet Quantity: 3; Outlet Position: 90 DEG APART. 20 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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