PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

207SBHeat Sink,electrical-Electronic

Eg and G Inc · NSN 5999-01-089-1006 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-089-1006 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-089-1006. Primary manufacturer part number: 207SB.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Body Style: CYLINDRICAL PRESS-ON
  • Surface Treatment: ANODIZE
  • Material: COPPER ALLOY
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material Document and Classification: MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
  • Overall Diameter: 0.580 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: MIL-A-8625,TYPE I OR II MIL SPEC SINGLE TREATMENT RESPONSE
Applications
  • Applications requiring Copper Alloy construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-089-1006, 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 Eg and G Inc. Government technical data includes 16 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-089-1006
Primary Part Number207SB
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEg and G Inc
StatusCANCELLED
Body StyleCYLINDRICAL PRESS-ON
Surface TreatmentANODIZE
MaterialCOPPER ALLOY
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Material Document and ClassificationMIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
Overall Diameter0.580 INCHES NOMINAL IN
Surface Treatment Document and ClassificationMIL-A-8625,TYPE I OR II MIL SPEC SINGLE TREATMENT RESPONSE
Unthreaded Mounting Hole Diameter0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Body StyleCYLINDRICAL PRESS-ON
Surface TreatmentANODIZE
MaterialCOPPER ALLOY
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Material Document and ClassificationMIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE
Overall Diameter0.580 INCHES NOMINAL IN
Surface Treatment Document and ClassificationMIL-A-8625,TYPE I OR II MIL SPEC SINGLE TREATMENT RESPONSE
Unthreaded Mounting Hole Diameter0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-01-083-6304
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Verified Substitutes 12
No Item Name Available
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Heat Sink,electrical-Electronic
Cross-Reference Index
Part NumberManufacturer
207CB Wakefield Engineering Co (USA)
208CB Eg and G Wakefield Engineering (USA)
M87111/03-2A08 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-87111/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
73301A010002 Leonardo S.p.a. Div Electronics (ITA)
208CB Wakefield Engineering Co (USA)
207SB PRIMARY Eg and G Inc (USA)
Related Parts
SUCCESSOR 5999-01-083-6304 Heat Sink,electrical-Electronic
5999-01-211-1621SUCCESSOR
NO ITEM NAME AVAILABLE
5999-01-087-3493SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-208-7299SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-211-6670SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-212-0408SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-212-1101SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-215-6876SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-216-2400SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-217-3653SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-217-3654SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC
5999-01-224-6301SUCCESSOR
HEAT SINK,ELECTRICAL-ELECTRONIC

Frequently Asked Questions

What is NSN 5999-01-089-1006?

NSN 5999-01-089-1006 is a Heat Sink,electrical-Electronic, manufactured by Eg and G Inc, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-01-089-1006?

NSN 5999-01-089-1006 has 7 cross-referenced part numbers: 207CB (Wakefield Engineering Co), 208CB (Eg and G Wakefield Engineering), M87111/03-2A08 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-87111/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 73301A010002 (Leonardo S.p.a. Div Electronics) and 2 more.

What NSN replaces 5999-01-089-1006?

There are 12 known substitutes for 5999-01-089-1006: 5999-01-211-1621, 5999-01-083-6304, 5999-01-087-3493 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 207SB?

Key specifications for 207SB: Body Style: CYLINDRICAL PRESS-ON; Surface Treatment: ANODIZE; Material: COPPER ALLOY; Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-089-1006 still in active supply?

NSN 5999-01-089-1006 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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