PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300355Heat Sink,electrical-Electronic

Illinois Tool Works, Inc. Div Magnaflux · NSN 5999-01-225-2555 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-225-2555 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-225-2555. Primary manufacturer part number: 300355.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • 1 verified cross-reference
  • Primary manufacturer: Illinois Tool Works, Inc. Div Magnaflux
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-225-2555, 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 Illinois Tool Works, Inc. Div Magnaflux. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 — No Item Name Available (FSG 59)
ManufacturersIllinois Tool Works, Inc. Div Magnaflux (CAGE 37676)
Technical Specifications
ParameterValue
NSN5999-01-225-2555
Primary Part Number300355
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerIllinois Tool Works, Inc. Div Magnaflux
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.6800 lbs
Cube0.0916 cu ft
Verified Substitutes 3
5120-00-293-1324 INTERCHANGEABLE
Wrench,open End
5945-00-933-4466 INTERCHANGEABLE
Relay,reed
4730-01-605-0763 INTERCHANGEABLE
Plate,orifice,fluid
Cross-Reference Index
Part NumberManufacturer
300355 PRIMARY Illinois Tool Works, Inc. Div Magnaflux (USA)
Related Parts
5120-00-293-1324INTERCHANGEABLE
WRENCH,OPEN END
5945-00-933-4466INTERCHANGEABLE
RELAY,REED
4730-01-605-0763INTERCHANGEABLE
PLATE,ORIFICE,FLUID

Frequently Asked Questions

What is NSN 5999-01-225-2555?

NSN 5999-01-225-2555 is a Heat Sink,electrical-Electronic, manufactured by Illinois Tool Works, Inc. Div Magnaflux, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-225-2555?

NSN 5999-01-225-2555 has 1 cross-referenced part number: 300355 (Illinois Tool Works, Inc. Div Magnaflux).

What NSN replaces 5999-01-225-2555?

There are 3 known substitutes for 5999-01-225-2555: 5120-00-293-1324, 5945-00-933-4466, 4730-01-605-0763. Verify interchangeability with system specifications before substitution.

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