PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

503C553G16Heater,thermal Release

Eaton Corporation Dba Eaton Inoac · NSN 5999-00-194-4973 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-194-4973 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-194-4973. Primary manufacturer part number: 503C553G16.
Features
  • Heater,thermal Release — FSC 5999
  • 2 verified cross-references
  • Primary manufacturer: Eaton Corporation Dba Eaton Inoac
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-194-4973, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Eaton Corporation Dba Eaton Inoac. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameHeater,thermal Release
FSC / FSG5999 — No Item Name Available (FSG 59)
ManufacturersEaton Corporation Dba Eaton Inoac (CAGE 89946)
Successor NSN6625-00-694-2054 — Course Checker
Technical Specifications
ParameterValue
NSN5999-00-194-4973
Primary Part Number503C553G16
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corporation Dba Eaton Inoac
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 12
6625-00-694-2054ANGSM21 SUCCESSOR
Course Checker
Joint Electronics Type Designation System
5935-00-113-5091 INTERCHANGEABLE
Shell,electrical Connector
4320-00-146-0420H16 INTERCHANGEABLE
Ring,lantern
Circor Naval Solutions Llc Dba Warren Pumps
5955-00-267-5076H16 INTERCHANGEABLE
Crystal Unit,quartz
Kurz-Kasch Inc
5955-00-267-5077322-1012P3 INTERCHANGEABLE
Crystal Unit,quartz
Raytheon Company Dba Raytheon Co
5120-00-277-2342 INTERCHANGEABLE
Wrench,open End
4720-00-289-3292 INTERCHANGEABLE
Hose,preformed
2540-00-311-4200H16 INTERCHANGEABLE
Handle,hood
Napco International Llc Dba Napco International Inc
4520-00-378-9682H16 INTERCHANGEABLE
Heating Element,electrical,nonim
Siemens Energy and Automation Inc Siemens Furnas Controls Div
6710-00-437-7233 INTERCHANGEABLE
Camera,motion Picture
Cross-Reference Index
Part NumberManufacturer
H16 Eaton Corporation Dba Eaton Inoac (USA)
503C553G16 PRIMARY Eaton Corporation Dba Eaton Inoac (USA)
Related Parts
6625-00-694-2054SUCCESSOR
COURSE CHECKER
ANGSM21
5935-00-113-5091INTERCHANGEABLE
SHELL,ELECTRICAL CONNECTOR
4320-00-146-0420INTERCHANGEABLE
RING,LANTERN
H16
5955-00-267-5076INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
H16
5955-00-267-5077INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
322-1012P3
5120-00-277-2342INTERCHANGEABLE
WRENCH,OPEN END
4720-00-289-3292INTERCHANGEABLE
HOSE,PREFORMED
2540-00-311-4200INTERCHANGEABLE
HANDLE,HOOD
H16
4520-00-378-9682INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
H16
6710-00-437-7233INTERCHANGEABLE
CAMERA,MOTION PICTURE
5950-00-951-9714INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
H16
6210-01-022-5997INTERCHANGEABLE
LIGHT,INDICATOR
H-16

Frequently Asked Questions

What is NSN 5999-00-194-4973?

NSN 5999-00-194-4973 is a Heater,thermal Release, manufactured by Eaton Corporation Dba Eaton Inoac, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-194-4973?

NSN 5999-00-194-4973 has 2 cross-referenced part numbers: H16 (Eaton Corporation Dba Eaton Inoac), 503C553G16 (Eaton Corporation Dba Eaton Inoac).

What NSN replaces 5999-00-194-4973?

There are 12 known substitutes for 5999-00-194-4973: 6625-00-694-2054, 5935-00-113-5091, 4320-00-146-0420 and 9 more. Verify interchangeability with system specifications before substitution.

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