PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42339Heater,thermo Overl

Ward Leonard Ct Llc · NSN 4540-00-653-9434 · FSC 4540 · No Item Name Available
Verified by PartsTable
NSN 4540-00-653-9434 — this item is cataloged by the U.S. Government under National Stock Number 4540-00-653-9434. Primary manufacturer part number: 42339.
Features
  • Heater,thermo Overl — FSC 4540
  • 1 verified cross-reference
  • Primary manufacturer: Ward Leonard Ct Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermo Overl, cataloged under National Stock Number 4540-00-653-9434, is classified within Federal Supply Class 4540 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Ward Leonard Ct Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHeater,thermo Overl
FSC / FSG4540 — No Item Name Available (FSG 45)
ManufacturersWard Leonard Ct Llc (CAGE 63743)
Technical Specifications
ParameterValue
NSN4540-00-653-9434
Primary Part Number42339
Item NameHeater,thermo Overl
FSC / FSG4540 / 45 — No Item Name Available
ManufacturerWard Leonard Ct Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6520-00-536-535042-339 INTERCHANGEABLE
Plugger,plastic Filling,dental
Sklar Corporation Dba Sklar Instruments
5962-01-088-980942339 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
6625-01-113-08624233-9 INTERCHANGEABLE
Probe,test
Fluke Electronics Corp
5330-01-657-604942339 INTERCHANGEABLE
Gasket
Purolator Products Co Div Motor Components, Llc
Cross-Reference Index
Part NumberManufacturer
42339 PRIMARY Ward Leonard Ct Llc (USA)
Related Parts
6520-00-536-5350INTERCHANGEABLE
PLUGGER,PLASTIC FILLING,DENTAL
42-339
5962-01-088-9809INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
42339
6625-01-113-0862INTERCHANGEABLE
PROBE,TEST
4233-9
5330-01-657-6049INTERCHANGEABLE
GASKET
42339

Frequently Asked Questions

What is NSN 4540-00-653-9434?

NSN 4540-00-653-9434 is a Heater,thermo Overl, manufactured by Ward Leonard Ct Llc, classified under FSC 4540 (No Item Name Available). Status: active.

What are the part numbers for NSN 4540-00-653-9434?

NSN 4540-00-653-9434 has 1 cross-referenced part number: 42339 (Ward Leonard Ct Llc).

What NSN replaces 4540-00-653-9434?

There are 4 known substitutes for 4540-00-653-9434: 6520-00-536-5350, 5962-01-088-9809, 6625-01-113-0862 and 1 more. Verify interchangeability with system specifications before substitution.

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