PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

504665Heat Sink,electrical-Electronic

Aimtron Systems, Llc · NSN 5999-01-123-3128 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-123-3128 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-123-3128. Primary manufacturer part number: 504665.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Material: ALUMINUM ALLOY 6063
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
  • Material Document and Classification: QQ-A-200/9 FED SPEC SINGLE MATERIAL RESPONSE
  • Surface Treatment: ANODIZE
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY 6063
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
Applications
  • Applications requiring Aluminum Alloy 6063 construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-123-3128, 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 Aimtron Systems, Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-123-3128
Primary Part Number504665
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerAimtron Systems, Llc
StatusACTIVE
MaterialALUMINUM ALLOY 6063
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
Material Document and ClassificationQQ-A-200/9 FED SPEC SINGLE MATERIAL RESPONSE
Surface TreatmentANODIZE
Overall Diameter0.750 INCHES NOMINAL IN
MaterialALUMINUM ALLOY 6063
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
Material Document and ClassificationQQ-A-200/9 FED SPEC SINGLE MATERIAL RESPONSE
Surface TreatmentANODIZE
Overall Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeZN
Weight0.0200 lbs
Cube0.0002 cu ft
Verified Substitutes 2
5999-00-116-898313084369 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Lockheed Martin Corporation
5999-01-073-8792 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Cross-Reference Index
Part NumberManufacturer
504665 Cardion Inc (USA)
2230B-5 Thermalloy Co Inc (USA)
504665 Shiloh Industries Inc (USA)
504665 PRIMARY Aimtron Systems, Llc (USA)
Related Parts
5999-00-116-8983INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
13084369
5999-01-073-8792INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC

Frequently Asked Questions

What is NSN 5999-01-123-3128?

NSN 5999-01-123-3128 is a Heat Sink,electrical-Electronic, manufactured by Aimtron Systems, Llc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-123-3128?

NSN 5999-01-123-3128 has 4 cross-referenced part numbers: 504665 (Cardion Inc), 2230B-5 (Thermalloy Co Inc), 504665 (Shiloh Industries Inc), 504665 (Aimtron Systems, Llc).

What NSN replaces 5999-01-123-3128?

There are 2 known substitutes for 5999-01-123-3128: 5999-00-116-8983, 5999-01-073-8792. Verify interchangeability with system specifications before substitution.

What are the specifications of 504665?

Key specifications for 504665: Material: ALUMINUM ALLOY 6063; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: QQ-A-200/9 FED SPEC SINGLE MATERIAL RESPONSE; Surface Treatment: ANODIZE. 12 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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