PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21069-1Heat Sink,electrical-Electronic

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5999-01-095-8121 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-095-8121 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-095-8121. Primary manufacturer part number: 21069-1.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Surface Treatment Document and Classification: MIL-A-8625 TY 3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE
  • Material: ALUMINUM ALLOY 6061
  • Surface Treatment: ANODIZE
  • Surface Treatment Document and Classification: MIL-A-8625 TY 3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE
  • Material: ALUMINUM ALLOY 6061
  • Surface Treatment: ANODIZE
  • 2 verified cross-references
Applications
  • Applications requiring Aluminum Alloy 6061 construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-095-8121, 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 Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5999-01-095-8121
Primary Part Number21069-1
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
Surface Treatment Document and ClassificationMIL-A-8625 TY 3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE
MaterialALUMINUM ALLOY 6061
Surface TreatmentANODIZE
Surface Treatment Document and ClassificationMIL-A-8625 TY 3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE
MaterialALUMINUM ALLOY 6061
Surface TreatmentANODIZE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5325-01-096-119021069-001 INTERCHANGEABLE
Grommet,nonmetallic
Astrocom Electronics Inc
Cross-Reference Index
Part NumberManufacturer
21069-1 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
21069-1E Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
5325-01-096-1190INTERCHANGEABLE
GROMMET,NONMETALLIC
21069-001

Frequently Asked Questions

What is NSN 5999-01-095-8121?

NSN 5999-01-095-8121 is a Heat Sink,electrical-Electronic, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-095-8121?

NSN 5999-01-095-8121 has 2 cross-referenced part numbers: 21069-1 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 21069-1E (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 5999-01-095-8121?

There is 1 known substitute for 5999-01-095-8121: 5325-01-096-1190. Verify interchangeability with system specifications before substitution.

What are the specifications of 21069-1?

Key specifications for 21069-1: Surface Treatment Document and Classification: MIL-A-8625 TY 3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE; Material: ALUMINUM ALLOY 6061; Overall Height: 0.190 INCHES NOMINAL IN; Overall Length: 5.550 INCHES NOMINAL IN. 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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