PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

502AS3273Heat Sink,electrical-Electronic

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 5999-01-210-2287 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-210-2287 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-210-2287. Primary manufacturer part number: 502AS3273.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • 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.).
  • Unthreaded Mounting Hole Diameter: 0.213 INCHES NOMINAL SECOND MOUNTING FACILITY IN
  • Specification/standard Data: 81349-MIL-H-87111/5 GOVERNMENT SPECIFICATION
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY
  • Material: ALUMINUM ALLOY
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
  • Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL FIRST MOUNTING FACILITY IN
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-210-2287, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-210-2287
Primary Part Number502AS3273
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusCANCELLED
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.).
Unthreaded Mounting Hole Diameter0.213 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Specification/standard Data81349-MIL-H-87111/5 GOVERNMENT SPECIFICATION
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY
MaterialALUMINUM ALLOY
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL FIRST MOUNTING FACILITY IN
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.).
Unthreaded Mounting Hole Diameter0.213 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Specification/standard Data81349-MIL-H-87111/5 GOVERNMENT SPECIFICATION
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY
MaterialALUMINUM ALLOY
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL FIRST MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-00-470-7842 (12G3585)
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Weight0.0100 lbs
Cube0.0049 cu ft
Verified Substitutes 6
5999-00-470-784212G3585 SUCCESSOR
Heat Sink,electrical-Electronic
Aimtron Systems, Llc
6625-01-064-35556104 SUCCESSOR
Test Set,radio Frequency Power
Bird Electronic Corporation Div Bird Electronic Corp
5999-01-183-9737NAS4121-016B SUCCESSOR
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-209-0650NAS4121-017B SUCCESSOR
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-286-7295NAS4121-291B SUCCESSOR
Heat Sink,electrical-Electronic
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5999-01-423-6866NAS4121-117B SUCCESSOR
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
502AS3273 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
H87111/5-1A12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M87111/5-1A12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M87111/05-1A12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H87111/05-1A12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-87111/5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6104 Thermalloy Co Inc (USA)
M87111/05-1A012 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5999-00-470-7842 Heat Sink,electrical-Electronic · 12G3585
6625-01-064-3555SUCCESSOR
TEST SET,RADIO FREQUENCY POWER
6104
5999-01-183-9737SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4121-016B
5999-01-209-0650SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4121-017B
5999-01-286-7295SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4121-291B
5999-01-423-6866SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4121-117B

Frequently Asked Questions

What is NSN 5999-01-210-2287?

NSN 5999-01-210-2287 is a Heat Sink,electrical-Electronic, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-01-210-2287?

NSN 5999-01-210-2287 has 8 cross-referenced part numbers: 502AS3273 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), H87111/5-1A12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M87111/5-1A12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M87111/05-1A12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), H87111/05-1A12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 5999-01-210-2287?

There are 6 known substitutes for 5999-01-210-2287: 5999-00-470-7842, 6625-01-064-3555, 5999-01-183-9737 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 502AS3273?

Key specifications for 502AS3273: Overall Length: 1.531 INCHES NOMINAL IN; 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.).; Unthreaded Mounting Hole Diameter: 0.213 INCHES NOMINAL SECOND MOUNTING FACILITY IN; Specification/standard Data: 81349-MIL-H-87111/5 GOVERNMENT SPECIFICATION. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-210-2287 still in active supply?

NSN 5999-01-210-2287 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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