PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS4118F12DHeat Sink,electrical-Electronic

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5999-01-211-1617 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-211-1617 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-211-1617. Primary manufacturer part number: NAS4118F12D.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Overall Diameter: 0.375 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
  • Material: COPPER ALLOY
  • Test Data Document: 81349-MIL-H-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Surface Treatment: ANODIZE
  • Specification/standard Data: 81349-MIL-H-87111/2 GOVERNMENT SPECIFICATION
  • Overall Diameter: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-211-1617, 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 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-211-1617
Primary Part NumberNAS4118F12D
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Overall Diameter0.375 INCHES NOMINAL IN
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
MaterialCOPPER ALLOY
Test Data Document81349-MIL-H-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Surface TreatmentANODIZE
Specification/standard Data81349-MIL-H-87111/2 GOVERNMENT SPECIFICATION
Overall Diameter0.375 INCHES NOMINAL IN
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
MaterialCOPPER ALLOY
Test Data Document81349-MIL-H-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Surface TreatmentANODIZE
Specification/standard Data81349-MIL-H-87111/2 GOVERNMENT SPECIFICATION
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-00-031-3638 (138C192H01)
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJZ
Weight0.0100 lbs
Cube0.0030 cu ft
Verified Substitutes 12
5999-00-031-3638138C192H01 SUCCESSOR
Heat Sink,electrical-Electronic
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Cross-Reference Index
Part NumberManufacturer
97213 Triumph Engine Control Systems Llc (USA)
2606SH5B Eg and G Wakefield Engineering (USA)
366582-1 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
260-105H59 Eg and G Wakefield Engineering (USA)
260-10SH5B Eg and G Wakefield Engineering (USA)
M87111/02-3A12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
4009635-200 Honeywell International Inc. Dba Honeywell International (USA)
MIL-H-87111/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
988184-3 Raytheon Company Dba Raytheon (USA)
NAS4118 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
TX0506-1ND Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components (USA)
NAS4118F12D PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
CN17634-102 Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis (USA)
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5999-01-324-0542SUCCESSOR
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5999-01-326-8182SUCCESSOR
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Frequently Asked Questions

What is NSN 5999-01-211-1617?

NSN 5999-01-211-1617 is a Heat Sink,electrical-Electronic, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-01-211-1617?

NSN 5999-01-211-1617 has 13 cross-referenced part numbers: 97213 (Triumph Engine Control Systems Llc), 2606SH5B (Eg and G Wakefield Engineering), 366582-1 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products), 260-105H59 (Eg and G Wakefield Engineering), 260-10SH5B (Eg and G Wakefield Engineering) and 8 more.

What NSN replaces 5999-01-211-1617?

There are 12 known substitutes for 5999-01-211-1617: 5999-00-031-3638, 5999-01-105-4991, 5999-01-211-1616 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS4118F12D?

Key specifications for NAS4118F12D: Overall Diameter: 0.375 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE; Material: COPPER ALLOY; Test Data Document: 81349-MIL-H-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-211-1617 still in active supply?

NSN 5999-01-211-1617 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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