PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-3504Heater,electronic Equipment

Honeywell International Inc. Dba Honeywell Div Sensing and Control · NSN 4540-00-004-7534 · FSC 4540 · No Item Name Available
Verified by PartsTable
NSN 4540-00-004-7534 — this item is cataloged by the U.S. Government under National Stock Number 4540-00-004-7534. Primary manufacturer part number: 20-3504.
Features
  • Heater,electronic Equipment — FSC 4540
  • General Characteristics Item Description: 0.250 IN. LG,9.300 IN. DIA IN
  • 2 verified cross-references
  • Primary manufacturer: Honeywell International Inc. Dba Honeywell Div Sensing and Control
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,electronic Equipment, cataloged under National Stock Number 4540-00-004-7534, 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 Honeywell International Inc. Dba Honeywell Div Sensing and Control. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4540-00-004-7534
Primary Part Number20-3504
Item NameHeater,electronic Equipment
FSC / FSG4540 / 45 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell Div Sensing and Control
StatusACTIVE
General Characteristics Item Description0.250 IN. LG,9.300 IN. DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-120-31012004480 INTERCHANGEABLE
Bearing,roller,needle
Garwood/feller Inc Garwood Winch Div
5330-00-297-724655AC4421 INTERCHANGEABLE
Gasket
Fwd Seagrave Holdings Lp
1005-01-576-9944 INTERCHANGEABLE
Magazine Spring
9150-01-680-32533012-09 INTERCHANGEABLE
Fuel Additive
Power Service Products, Inc.
Cross-Reference Index
Part NumberManufacturer
20-3504 PRIMARY Honeywell International Inc. Dba Honeywell Div Sensing and Control (USA)
301209 Northrop Grumman Corp Electronic Systems Defensive System Div (USA)
Related Parts
3110-00-120-3101INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
2004480
5330-00-297-7246INTERCHANGEABLE
GASKET
55AC4421
1005-01-576-9944INTERCHANGEABLE
MAGAZINE SPRING
9150-01-680-3253INTERCHANGEABLE
FUEL ADDITIVE
3012-09

Frequently Asked Questions

What is NSN 4540-00-004-7534?

NSN 4540-00-004-7534 is a Heater,electronic Equipment, manufactured by Honeywell International Inc. Dba Honeywell Div Sensing and Control, classified under FSC 4540 (No Item Name Available). Status: active.

What are the part numbers for NSN 4540-00-004-7534?

NSN 4540-00-004-7534 has 2 cross-referenced part numbers: 20-3504 (Honeywell International Inc. Dba Honeywell Div Sensing and Control), 301209 (Northrop Grumman Corp Electronic Systems Defensive System Div).

What NSN replaces 4540-00-004-7534?

There are 4 known substitutes for 4540-00-004-7534: 3110-00-120-3101, 5330-00-297-7246, 1005-01-576-9944 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-3504?

Key specifications for 20-3504: General Characteristics Item Description: 0.250 IN. LG,9.300 IN. DIA IN. 1 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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