PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

019278-2Heat Sink,electrical-Electronic

Sci Systems Inc · NSN 5999-01-254-9274 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-254-9274 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-254-9274. Primary manufacturer part number: 019278-2.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
  • Unthreaded Mounting Hole Diameter: 0.062 INCHES MINIMUM AND 0.067 INCHES MAXIMUM FIRST MOUNTING FACILITY IN
  • Material: ALUMINUM ALLOY 6063
  • Surface Treatment: ANODIZE
  • Unthreaded Mounting Hole Diameter: 0.296 INCHES NOMINAL SECOND MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Applications
  • Applications requiring Aluminum Alloy 6063 construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-254-9274, 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 Sci Systems Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-254-9274
Primary Part Number019278-2
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSci Systems Inc
StatusCANCELLED
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
Unthreaded Mounting Hole Diameter0.062 INCHES MINIMUM AND 0.067 INCHES MAXIMUM FIRST MOUNTING FACILITY IN
MaterialALUMINUM ALLOY 6063
Surface TreatmentANODIZE
Unthreaded Mounting Hole Diameter0.296 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
Unthreaded Mounting Hole Diameter0.062 INCHES MINIMUM AND 0.067 INCHES MAXIMUM FIRST MOUNTING FACILITY IN
MaterialALUMINUM ALLOY 6063
Surface TreatmentANODIZE
Unthreaded Mounting Hole Diameter0.296 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.0400 lbs
Cube0.0069 cu ft
Verified Substitutes 7
No Item Name Available
5915-00-503-368117381 INTERCHANGEABLE
Filter,radio Frequency Interfere
Sprague Electric Co World Hqs
5950-01-097-9532 INTERCHANGEABLE
Coil,radio Frequency
3040-01-358-869017381 INTERCHANGEABLE
Gearshaft,spur
New Venture Gear Inc New Process Gear Div
5330-01-434-019617381 INTERCHANGEABLE
Packing Assembly
U S Dept of Transportation Federal Aviation Administration
8465-01-502-7325 INTERCHANGEABLE
Belt,nylon
8465-01-560-777617381 INTERCHANGEABLE
Belt,individual Equipment
Bianchi International Dba Bae Systems Products Group
Cross-Reference Index
Part NumberManufacturer
019278-2 Sci Systems Inc (USA)
17381 Thermalloy Co Inc (USA)
Related Parts
5999-01-238-3638SUCCESSOR
NO ITEM NAME AVAILABLE
5915-00-503-3681INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
17381
5950-01-097-9532INTERCHANGEABLE
COIL,RADIO FREQUENCY
3040-01-358-8690INTERCHANGEABLE
GEARSHAFT,SPUR
17381
5330-01-434-0196INTERCHANGEABLE
PACKING ASSEMBLY
17381
8465-01-502-7325INTERCHANGEABLE
BELT,NYLON
8465-01-560-7776INTERCHANGEABLE
BELT,INDIVIDUAL EQUIPMENT
17381

Frequently Asked Questions

What is NSN 5999-01-254-9274?

NSN 5999-01-254-9274 is a Heat Sink,electrical-Electronic, manufactured by Sci Systems Inc, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-01-254-9274?

NSN 5999-01-254-9274 has 2 cross-referenced part numbers: 019278-2 (Sci Systems Inc), 17381 (Thermalloy Co Inc).

What NSN replaces 5999-01-254-9274?

There are 7 known substitutes for 5999-01-254-9274: 5999-01-238-3638, 5915-00-503-3681, 5950-01-097-9532 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 019278-2?

Key specifications for 019278-2: Overall Width: 0.500 INCHES NOMINAL IN; Overall Height: 0.292 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-254-9274 still in active supply?

NSN 5999-01-254-9274 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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