PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

503C553G48Heater,thermal Release

Eaton Corporation Dba Eaton Inoac · NSN 5999-00-884-4716 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-884-4716 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-884-4716. Primary manufacturer part number: 503C553G48.
Features
  • Heater,thermal Release — FSC 5999
  • 3 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 5999-00-884-4716, 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 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 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); Westinghouse Electric Corp Control Business Unit (CAGE 11660)
Technical Specifications
ParameterValue
NSN5999-00-884-4716
Primary Part Number503C553G48
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
Weight0.0100 lbs
Cube0.0010 cu ft
Verified Substitutes 7
2590-00-253-78133330025 INTERCHANGEABLE
Cap,filler Opening
Ed Etnyre & Co
4320-00-612-7538R397PC7 INTERCHANGEABLE
Ring,lantern
Circor Naval Solutions Llc Dba Warren Pumps
5950-00-883-1935370-116755 INTERCHANGEABLE
Transformer,pulse
Cubic Defense Applications, Inc.
3110-00-949-1883 INTERCHANGEABLE
Cam Follower,needle Bearing
5999-01-035-5051H-48 INTERCHANGEABLE
Heater,thermal Release
Siemens Energy and Automation Inc Siemens Furnas Controls Div
4330-01-247-7670H-48 INTERCHANGEABLE
Filter Element,fluid
Emerson Electric Co Alco Controls Div
5120-01-339-03682002MRMHSS INTERCHANGEABLE
Wrench,torque
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Cross-Reference Index
Part NumberManufacturer
H48 Eaton Corporation Dba Eaton Inoac (USA)
S503C553G48 Westinghouse Electric Corp Control Business Unit
503C553G48 PRIMARY Eaton Corporation Dba Eaton Inoac (USA)
Related Parts
2590-00-253-7813INTERCHANGEABLE
CAP,FILLER OPENING
3330025
4320-00-612-7538INTERCHANGEABLE
RING,LANTERN
R397PC7
5950-00-883-1935INTERCHANGEABLE
TRANSFORMER,PULSE
370-116755
3110-00-949-1883INTERCHANGEABLE
CAM FOLLOWER,NEEDLE BEARING
5999-01-035-5051INTERCHANGEABLE
HEATER,THERMAL RELEASE
H-48
4330-01-247-7670INTERCHANGEABLE
FILTER ELEMENT,FLUID
H-48
5120-01-339-0368INTERCHANGEABLE
WRENCH,TORQUE
2002MRMHSS

Frequently Asked Questions

What is NSN 5999-00-884-4716?

NSN 5999-00-884-4716 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 5999-00-884-4716?

NSN 5999-00-884-4716 has 3 cross-referenced part numbers: H48 (Eaton Corporation Dba Eaton Inoac), S503C553G48 (Westinghouse Electric Corp Control Business Unit), 503C553G48 (Eaton Corporation Dba Eaton Inoac).

What NSN replaces 5999-00-884-4716?

There are 7 known substitutes for 5999-00-884-4716: 2590-00-253-7813, 4320-00-612-7538, 5950-00-883-1935 and 4 more. Verify interchangeability with system specifications before substitution.

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