PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

414923-1Heat Sink,electrical-Electronic

Raytheon Company Dba Raytheon · NSN 5999-00-625-4645 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-625-4645 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-625-4645. Primary manufacturer part number: 414923-1.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Unthreaded Mounting Hole Diameter: 0.109 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 44 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: BERYLLIUM OXIDE
  • Unthreaded Mounting Hole Diameter: 0.109 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 44 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: BERYLLIUM OXIDE
  • 7 verified cross-references
Applications
  • Applications requiring Beryllium Oxide construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-00-625-4645, 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 Raytheon Company Dba Raytheon. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5999-00-625-4645
Primary Part Number414923-1
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusCANCELLED
Unthreaded Mounting Hole Diameter0.109 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity44 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialBERYLLIUM OXIDE
Unthreaded Mounting Hole Diameter0.109 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity44 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialBERYLLIUM OXIDE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Weight0.1000 lbs
Cube0.0024 cu ft
Verified Substitutes 12
5930-00-052-1200 INTERCHANGEABLE
Switch Subassembly
9540-00-119-1637 INTERCHANGEABLE
Angle,structural
5915-00-156-1698 INTERCHANGEABLE
Filter,low Pass
9540-00-161-2960 INTERCHANGEABLE
Angle,structural
3020-00-252-7360100-2 INTERCHANGEABLE
Chain,roller
Jeffrey Co the
4320-00-336-5418D100 INTERCHANGEABLE
Sleeve,shaft,pump
Circor Naval Solutions Llc Dba Warren Pumps
5950-00-428-334114986 INTERCHANGEABLE
Transformer,power
Drs Signal Solutions, Inc.
6685-00-443-3168149-86 INTERCHANGEABLE
Terminal Asy
Horizon Aerospace Llc Dba Magnetics Division
1660-00-454-915514986 INTERCHANGEABLE
Guard,control Beam
Mission Systems Orchard Park Inc
2320-00-555-2375D-100 INTERCHANGEABLE
Truck,cargo
Chrysler Realty Company Llc Dba Daimler Chrysler
Cross-Reference Index
Part NumberManufacturer
414923-1 Raytheon Company Dba Raytheon (USA)
D100 Materion Brush Inc (USA)
14986 Thermalloy Co Inc (USA)
14986 IV-Electronic Klaus Vespermann Kg (DEU)
4089 IV-Electronic Klaus Vespermann Kg (DEU)
276-016-0001 Northrop Grumman Systems Corporation (USA)
4089 Thermalloy Co Inc (USA)
Related Parts
5930-00-052-1200INTERCHANGEABLE
SWITCH SUBASSEMBLY
9540-00-119-1637INTERCHANGEABLE
ANGLE,STRUCTURAL
5915-00-156-1698INTERCHANGEABLE
FILTER,LOW PASS
9540-00-161-2960INTERCHANGEABLE
ANGLE,STRUCTURAL
3020-00-252-7360INTERCHANGEABLE
CHAIN,ROLLER
100-2
4320-00-336-5418INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
D100
5950-00-428-3341INTERCHANGEABLE
TRANSFORMER,POWER
14986
6685-00-443-3168INTERCHANGEABLE
TERMINAL ASY
149-86
1660-00-454-9155INTERCHANGEABLE
GUARD,CONTROL BEAM
14986
2320-00-555-2375INTERCHANGEABLE
TRUCK,CARGO
D-100
5975-00-578-2859INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
1404
6635-00-578-5285INTERCHANGEABLE
TESTER,SPRING RESILIENCY

Frequently Asked Questions

What is NSN 5999-00-625-4645?

NSN 5999-00-625-4645 is a Heat Sink,electrical-Electronic, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-625-4645?

NSN 5999-00-625-4645 has 7 cross-referenced part numbers: 414923-1 (Raytheon Company Dba Raytheon), D100 (Materion Brush Inc), 14986 (Thermalloy Co Inc), 14986 (IV-Electronic Klaus Vespermann Kg), 4089 (IV-Electronic Klaus Vespermann Kg) and 2 more.

What NSN replaces 5999-00-625-4645?

There are 12 known substitutes for 5999-00-625-4645: 5930-00-052-1200, 9540-00-119-1637, 5915-00-156-1698 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 414923-1?

Key specifications for 414923-1: Overall Length: 0.844 INCHES NOMINAL IN; Unthreaded Mounting Hole Diameter: 0.109 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Mounting Facility Type and Quantity: 44 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 0.063 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-625-4645 still in active supply?

NSN 5999-00-625-4645 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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