PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1205-0329Heat Sink,electrical-Electronic

Keysight Technologies Inc · NSN 5999-00-417-4115 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-417-4115 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-417-4115. Primary manufacturer part number: 1205-0329.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Surface Treatment Document and Classification: MIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Material: COPPER ALLOY 172
  • Thread Class: 2B SINGLE MOUNTING FACILITY
  • Surface Treatment: CADMIUM
  • Body Style: THERMAL LINK
  • Mounting Facility Type and Quantity: 1 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Applications
  • Applications requiring Copper Alloy 172 construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-00-417-4115, 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 Keysight Technologies Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5999-00-417-4115
Primary Part Number1205-0329
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerKeysight Technologies Inc
StatusCANCELLED
Surface Treatment Document and ClassificationMIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
MaterialCOPPER ALLOY 172
Thread Class2B SINGLE MOUNTING FACILITY
Surface TreatmentCADMIUM
Body StyleTHERMAL LINK
Mounting Facility Type and Quantity1 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Material Document and ClassificationQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
Nominal Thread Size0.112 INCHES SINGLE MOUNTING FACILITY IN
Surface Treatment Document and ClassificationMIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
MaterialCOPPER ALLOY 172
Thread Class2B SINGLE MOUNTING FACILITY
Surface TreatmentCADMIUM
Body StyleTHERMAL LINK
Mounting Facility Type and Quantity1 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Material Document and ClassificationQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
Nominal Thread Size0.112 INCHES SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-01-226-3542 (260-4TH5B)
HAZMATNo
Weight0.0100 lbs
Cube0.0006 cu ft
Verified Substitutes 10
5999-01-226-3542260-4TH5B SUCCESSOR
Heat Sink,electrical-Electronic
Wakefield Thermal Solutions, Inc Div Wakefield Thermal Solutions
5950-00-087-8882294751 INTERCHANGEABLE
Transformer,audio Frequency
L3harris Cincinnati Electronics Corporation
5365-00-136-27978881 INTERCHANGEABLE
Spacer,sleeve
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
9540-00-145-5730 INTERCHANGEABLE
Angle,structural
5950-00-146-464910-30466-1 INTERCHANGEABLE
Transformer,power Autotransforme
The Boeing Company Div Defense
5330-00-164-87936246B INTERCHANGEABLE
Gasket
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
4820-00-359-4766470007 INTERCHANGEABLE
Valve,linear,directional Control
Dana Off Highway Products, Llc
5995-00-456-77528881 INTERCHANGEABLE
Cable Assembly,radio Frequency
Times Microwave Systems, Inc Dba Times Microwave Systems Inc Div Times Microwave Systems
5970-00-498-38681009 INTERCHANGEABLE
Insulator,pin
Abb Installation Products Inc
3110-00-573-7901T1M00011 INTERCHANGEABLE
Bearing,roller,tapered
Dana Off Highway Products, Llc
Cross-Reference Index
Part NumberManufacturer
2604TH5B Eg and G Wakefield Engineering (USA)
1205-0329 PRIMARY Keysight Technologies Inc (USA)
577R126H15 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
1205-0329 Keysight Technologies, Inc. (USA)
260-4TH5B Eg and G Wakefield Engineering (USA)
4009635-201 Honeywell International Inc. Dba Honeywell International (USA)
47-0007 Curtiss-Wright Controls Electronic Systems, Inc. (USA)
1205-0329 Hewlett-Packard Company Dba HP (USA)
6246B Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components (USA)
888-1 Ttc/wilkinson (USA)
138C192H02 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
SUCCESSOR 5999-01-226-3542 Heat Sink,electrical-Electronic · 260-4TH5B
5950-00-087-8882INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
294751
5365-00-136-2797INTERCHANGEABLE
SPACER,SLEEVE
8881
9540-00-145-5730INTERCHANGEABLE
ANGLE,STRUCTURAL
5950-00-146-4649INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
10-30466-1
5330-00-164-8793INTERCHANGEABLE
GASKET
6246B
4820-00-359-4766INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
470007
5995-00-456-7752INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
8881
5970-00-498-3868INTERCHANGEABLE
INSULATOR,PIN
1009
3110-00-573-7901INTERCHANGEABLE
BEARING,ROLLER,TAPERED
T1M00011

Frequently Asked Questions

What is NSN 5999-00-417-4115?

NSN 5999-00-417-4115 is a Heat Sink,electrical-Electronic, manufactured by Keysight Technologies Inc, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-417-4115?

NSN 5999-00-417-4115 has 11 cross-referenced part numbers: 2604TH5B (Eg and G Wakefield Engineering), 1205-0329 (Keysight Technologies Inc), 577R126H15 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 1205-0329 (Keysight Technologies, Inc.), 260-4TH5B (Eg and G Wakefield Engineering) and 6 more.

What NSN replaces 5999-00-417-4115?

There are 10 known substitutes for 5999-00-417-4115: 5999-01-226-3542, 5950-00-087-8882, 5365-00-136-2797 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1205-0329?

Key specifications for 1205-0329: Surface Treatment Document and Classification: MIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY; Overall Width: 0.312 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; End Item Identification: COMMUNICATIONS AND DATA SYSTEMS, OHIO CLASS SSN (TRIDENT) SHIP.. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-417-4115 still in active supply?

NSN 5999-00-417-4115 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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