PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

721448-1Heat Sink,electrical-Electronic

Raytheon Company Div Rmd Strategic · NSN 5999-01-239-8092 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-239-8092 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-239-8092. Primary manufacturer part number: 721448-1.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Unthreaded Mounting Hole Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: BERYLLIUM OXIDE
  • Unthreaded Mounting Hole Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: BERYLLIUM OXIDE
  • 4 verified cross-references
Applications
  • Applications requiring Beryllium Oxide construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-239-8092, 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 Div Rmd Strategic. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-239-8092
Primary Part Number721448-1
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerRaytheon Company Div Rmd Strategic
StatusACTIVE
Unthreaded Mounting Hole Diameter0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialBERYLLIUM OXIDE
Unthreaded Mounting Hole Diameter0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialBERYLLIUM OXIDE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0200 lbs
Cube0.0030 cu ft
Verified Substitutes 1
5962-01-058-246172-00300-115 INTERCHANGEABLE
Microcircuit,linear
Raytheon Company
Cross-Reference Index
Part NumberManufacturer
721448-1 Brush Wellman Inc Consolidated Ceramics and Metalizing Corp Div (USA)
721448-1 General Ceramics Inc National Beryllia Div (USA)
721448-1 PRIMARY Raytheon Company Div Rmd Strategic (USA)
3002-134 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5962-01-058-2461INTERCHANGEABLE
MICROCIRCUIT,LINEAR
72-00300-115

Frequently Asked Questions

What is NSN 5999-01-239-8092?

NSN 5999-01-239-8092 is a Heat Sink,electrical-Electronic, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-239-8092?

NSN 5999-01-239-8092 has 4 cross-referenced part numbers: 721448-1 (Brush Wellman Inc Consolidated Ceramics and Metalizing Corp Div), 721448-1 (General Ceramics Inc National Beryllia Div), 721448-1 (Raytheon Company Div Rmd Strategic), 3002-134 (Raytheon Company Div Rmd Strategic).

What NSN replaces 5999-01-239-8092?

There is 1 known substitute for 5999-01-239-8092: 5962-01-058-2461. Verify interchangeability with system specifications before substitution.

What are the specifications of 721448-1?

Key specifications for 721448-1: Overall Height: 0.050 INCHES NOMINAL IN; Unthreaded Mounting Hole Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN; Overall Length: 0.730 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN. 12 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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