PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SMC568303Heat Sink,electrical-Electronic

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 5999-00-944-3625 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-944-3625 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-944-3625. Primary manufacturer part number: SMC568303.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Material: COPPER ALLOY
  • Overall Diameter: 1.400 INCHES NOMINAL IN
  • Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
  • Material: COPPER ALLOY
  • Overall Diameter: 1.400 INCHES NOMINAL IN
  • Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
  • 4 verified cross-references
Applications
  • Applications requiring Copper Alloy construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-00-944-3625, 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 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-944-3625
Primary Part NumberSMC568303
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusCANCELLED
MaterialCOPPER ALLOY
Overall Diameter1.400 INCHES NOMINAL IN
Material Document and ClassificationMIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialCOPPER ALLOY
Overall Diameter1.400 INCHES NOMINAL IN
Material Document and ClassificationMIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeV
Weight0.1000 lbs
Cube0.0042 cu ft
Verified Substitutes 2
5999-01-216-2398NAS4119E09B SUCCESSOR
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
3110-00-155-6571 INTERCHANGEABLE
Bearing,roller,cylindrical
Cross-Reference Index
Part NumberManufacturer
SMC568303 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
NF213 Eg and G Wakefield Engineering (USA)
11150295 Us Army Aviation and Missile Command (USA)
213CB Eg and G Wakefield Engineering (USA)
Related Parts
5999-01-216-2398SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4119E09B
3110-00-155-6571INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL

Frequently Asked Questions

What is NSN 5999-00-944-3625?

NSN 5999-00-944-3625 is a Heat Sink,electrical-Electronic, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-944-3625?

NSN 5999-00-944-3625 has 4 cross-referenced part numbers: SMC568303 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), NF213 (Eg and G Wakefield Engineering), 11150295 (Us Army Aviation and Missile Command), 213CB (Eg and G Wakefield Engineering).

What NSN replaces 5999-00-944-3625?

There are 2 known substitutes for 5999-00-944-3625: 5999-01-216-2398, 3110-00-155-6571. Verify interchangeability with system specifications before substitution.

What are the specifications of SMC568303?

Key specifications for SMC568303: Material: COPPER ALLOY; Overall Diameter: 1.400 INCHES NOMINAL IN; Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Height: 0.420 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-944-3625 still in active supply?

NSN 5999-00-944-3625 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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