PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-H-87111/5Heat Sink,electrical-Electronic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5999-01-420-7753 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-420-7753 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-420-7753. Primary manufacturer part number: MIL-H-87111/5.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Surface Treatment: CHROMATE
  • Body Style: HORIZONTALLY MOUNTED
  • Mounting Facility Type and Quantity: 2 PLUG-IN SINGLE MOUNTING FACILITY
  • Material: ALUMINUM ALLOY
  • Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
  • Body Style: HORIZONTALLY MOUNTED
  • Surface Treatment: CHROMATE
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-420-7753, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-420-7753
Primary Part NumberMIL-H-87111/5
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Surface TreatmentCHROMATE
Body StyleHORIZONTALLY MOUNTED
Mounting Facility Type and Quantity2 PLUG-IN SINGLE MOUNTING FACILITY
MaterialALUMINUM ALLOY
Surface Treatment Document and ClassificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
Body StyleHORIZONTALLY MOUNTED
Surface TreatmentCHROMATE
Mounting Facility Type and Quantity2 PLUG-IN SINGLE MOUNTING FACILITY
MaterialALUMINUM ALLOY
Surface Treatment Document and ClassificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 12
5999-01-395-2474NAS4117C51 SUCCESSOR
Heat Sink-Insulator
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
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
5999-01-105-4991 INTERCHANGEABLE
Heat Sink,electrical-Electronic
5999-01-202-9730 INTERCHANGEABLE
Heat Sink,electrical-Electronic
5999-01-202-9731 INTERCHANGEABLE
Heat Sink,electrical-Electronic
5999-01-203-6128 INTERCHANGEABLE
Heat Sink,electrical-Electronic
5999-01-203-6130 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Cross-Reference Index
Part NumberManufacturer
MIL-H-87111/5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M87111/05-1R082 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-87111 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5999-01-395-2474SUCCESSOR
HEAT SINK-INSULATOR
NAS4117C51
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
5999-01-105-4991INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-202-9730INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-202-9731INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-203-6128INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-203-6130INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-204-3731INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-384-2619INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
NAS4121-370B

Frequently Asked Questions

What is NSN 5999-01-420-7753?

NSN 5999-01-420-7753 is a Heat Sink,electrical-Electronic, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-420-7753?

NSN 5999-01-420-7753 has 3 cross-referenced part numbers: MIL-H-87111/5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M87111/05-1R082 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-87111 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5999-01-420-7753?

There are 12 known substitutes for 5999-01-420-7753: 5999-01-395-2474, 5999-01-183-9737, 5999-01-209-0650 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-H-87111/5?

Key specifications for MIL-H-87111/5: Surface Treatment: CHROMATE; Body Style: HORIZONTALLY MOUNTED; Mounting Facility Type and Quantity: 2 PLUG-IN SINGLE MOUNTING FACILITY; Overall Length: 1.531 INCHES NOMINAL IN. 16 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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