PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

952165-2Heat Sink,electrical-Electronic

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5999-00-931-5931 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-931-5931 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-931-5931. Primary manufacturer part number: 952165-2.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: COPPER ALLOY
  • Unthreaded Mounting Hole Diameter: 0.240 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
  • Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: COPPER ALLOY
Applications
  • Applications requiring Copper Alloy construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-00-931-5931, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-931-5931
Primary Part Number952165-2
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusCANCELLED
Material Document and ClassificationMIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialCOPPER ALLOY
Unthreaded Mounting Hole Diameter0.240 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Material Document and ClassificationMIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialCOPPER ALLOY
Unthreaded Mounting Hole Diameter0.240 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeV
Weight0.0300 lbs
Cube0.0100 cu ft
Verified Substitutes 1
5999-01-151-2550L02285 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
Cross-Reference Index
Part NumberManufacturer
204-CB Eg and G Wakefield Engineering (USA)
952165-2 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
NF204 PRIMARY Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
HSC-00-009 Veeco Instruments Inc Lambda Div (USA)
352-9571-060 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
SM-C-772094-1 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
NF204 Dialight Corporation (USA)
352-9571-060 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
2011970-0703 Raytheon Company Dba Raytheon Co (USA)
5800583-097400-032 Hensoldt Sensors Gmbh (DEU)
NF-204 Eg and G Wakefield Engineering (USA)
Related Parts
5999-01-151-2550INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
L02285

Frequently Asked Questions

What is NSN 5999-00-931-5931?

NSN 5999-00-931-5931 is a Heat Sink,electrical-Electronic, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-931-5931?

NSN 5999-00-931-5931 has 11 cross-referenced part numbers: 204-CB (Eg and G Wakefield Engineering), 952165-2 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), NF204 (Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron), HSC-00-009 (Veeco Instruments Inc Lambda Div), 352-9571-060 (Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems) and 6 more.

What NSN replaces 5999-00-931-5931?

There is 1 known substitute for 5999-00-931-5931: 5999-01-151-2550. Verify interchangeability with system specifications before substitution.

What are the specifications of 952165-2?

Key specifications for 952165-2: Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE; Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Material: COPPER ALLOY; Overall Height: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-931-5931 still in active supply?

NSN 5999-00-931-5931 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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