PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS4118F12HHeat Sink,electrical-Electronic

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5999-01-230-4542 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-230-4542 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-230-4542. Primary manufacturer part number: NAS4118F12H.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Mounting Facility Type and Quantity: 1 THREADED STUD(S) SINGLE MOUNTING FACILITY
  • Thread Class: 2A SINGLE MOUNTING FACILITY A
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Nominal Thread Size: 0.132 INCHES SINGLE MOUNTING FACILITY IN
  • Specification/standard Data: 81349-MIL-H-87111/2 GOVERNMENT SPECIFICATION
  • 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.).
  • Criticality Code Justification: FEAT
Applications
  • Applications requiring Copper Alloy 172 construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-230-4542, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-230-4542
Primary Part NumberNAS4118F12H
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
StatusACTIVE
Mounting Facility Type and Quantity1 THREADED STUD(S) SINGLE MOUNTING FACILITY
Thread Class2A SINGLE MOUNTING FACILITY A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Nominal Thread Size0.132 INCHES SINGLE MOUNTING FACILITY IN
Specification/standard Data81349-MIL-H-87111/2 GOVERNMENT SPECIFICATION
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.).
Criticality Code JustificationFEAT
MaterialCOPPER ALLOY 172
Overall Diameter0.375 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 THREADED STUD(S) SINGLE MOUNTING FACILITY
Thread Class2A SINGLE MOUNTING FACILITY A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Nominal Thread Size0.132 INCHES SINGLE MOUNTING FACILITY IN
Specification/standard Data81349-MIL-H-87111/2 GOVERNMENT SPECIFICATION
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.).
Criticality Code JustificationFEAT
MaterialCOPPER ALLOY 172
Overall Diameter0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeZN
Weight0.0100 lbs
Cube0.0023 cu ft
Verified Substitutes 9
5999-01-498-4393NAS4118F15C SUCCESSOR
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-173-3176NAS4118E01K INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-174-3168NAS4118E05H INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-211-1617NAS4118F12D INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-216-8588NAS4118E16C INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-319-4133NAS4118-G24C INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-328-5037NAS4118E16H INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-372-4067NAS4118F08D INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-411-1080NAS4118G27C INTERCHANGEABLE
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
NAS4118 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
M87111/02-3D12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-8711/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
NAS4118F12H PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5999-01-498-4393SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118F15C
5999-01-173-3176INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118E01K
5999-01-174-3168INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118E05H
5999-01-211-1617INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118F12D
5999-01-216-8588INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118E16C
5999-01-319-4133INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118-G24C
5999-01-328-5037INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118E16H
5999-01-372-4067INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118F08D
5999-01-411-1080INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4118G27C

Frequently Asked Questions

What is NSN 5999-01-230-4542?

NSN 5999-01-230-4542 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: active.

What are the part numbers for NSN 5999-01-230-4542?

NSN 5999-01-230-4542 has 4 cross-referenced part numbers: NAS4118 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), M87111/02-3D12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-8711/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), NAS4118F12H (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5999-01-230-4542?

There are 9 known substitutes for 5999-01-230-4542: 5999-01-498-4393, 5999-01-173-3176, 5999-01-174-3168 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS4118F12H?

Key specifications for NAS4118F12H: Mounting Facility Type and Quantity: 1 THREADED STUD(S) SINGLE MOUNTING FACILITY; Thread Class: 2A SINGLE MOUNTING FACILITY A; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY; Nominal Thread Size: 0.132 INCHES SINGLE MOUNTING FACILITY IN. 22 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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