PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42009Heater,thermal Release

Cooper Industries Inc Cooper Distribution Equipment Div · NSN 5999-00-613-6781 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-613-6781 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-613-6781. Primary manufacturer part number: 42009.
Features
  • Heater,thermal Release — FSC 5999
  • Mounting Hole Diameter: 0.125 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S)
  • Mounting Hole Diameter: 0.125 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S)
  • 2 verified cross-references
  • Primary manufacturer: Cooper Industries Inc Cooper Distribution Equipment Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-613-6781, 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 Cooper Industries Inc Cooper Distribution Equipment Div. Government technical data includes 4 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-613-6781
Primary Part Number42009
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerCooper Industries Inc Cooper Distribution Equipment Div
StatusCANCELLED
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Weight0.0100 lbs
Cube0.0066 cu ft
Verified Substitutes 9
No Item Name Available
2940-00-075-172742009 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
3040-00-349-440942009 INTERCHANGEABLE
Shaft,valve Rocker
Trw Inc Trw Intl Trade Government Sales Dept
8030-00-558-6383 INTERCHANGEABLE
Antiseize Compound
5310-00-596-17211111455 INTERCHANGEABLE
Washer,finishing
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5930-00-831-52311989208-22 INTERCHANGEABLE
Switch,rotary
Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis
5950-01-158-987577C716508P001 INTERCHANGEABLE
Transformer,power
Lockheed Martin Corporation Div Rms
3040-01-296-700742009 INTERCHANGEABLE
Connecting Link,rigid
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4610-01-436-88214-2009 INTERCHANGEABLE
Level,bubble
Geier & Bluhm, Inc.
Cross-Reference Index
Part NumberManufacturer
42009 Cooper Industries Inc Cooper Distribution Equipment Div (USA)
T90109 Atlantic Research Corp (USA)
Related Parts
5999-00-504-9645SUCCESSOR
NO ITEM NAME AVAILABLE
2940-00-075-1727INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42009
3040-00-349-4409INTERCHANGEABLE
SHAFT,VALVE ROCKER
42009
8030-00-558-6383INTERCHANGEABLE
ANTISEIZE COMPOUND
5310-00-596-1721INTERCHANGEABLE
WASHER,FINISHING
1111455
5930-00-831-5231INTERCHANGEABLE
SWITCH,ROTARY
1989208-22
5950-01-158-9875INTERCHANGEABLE
TRANSFORMER,POWER
77C716508P001
3040-01-296-7007INTERCHANGEABLE
CONNECTING LINK,RIGID
42009
4610-01-436-8821INTERCHANGEABLE
LEVEL,BUBBLE
4-2009

Frequently Asked Questions

What is NSN 5999-00-613-6781?

NSN 5999-00-613-6781 is a Heater,thermal Release, manufactured by Cooper Industries Inc Cooper Distribution Equipment Div, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-613-6781?

NSN 5999-00-613-6781 has 2 cross-referenced part numbers: 42009 (Cooper Industries Inc Cooper Distribution Equipment Div), T90109 (Atlantic Research Corp).

What NSN replaces 5999-00-613-6781?

There are 9 known substitutes for 5999-00-613-6781: 5999-00-504-9645, 2940-00-075-1727, 3040-00-349-4409 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42009?

Key specifications for 42009: Overall Length: 1.938 INCHES NOMINAL IN; Mounting Hole Diameter: 0.125 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Width: 0.656 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-613-6781 still in active supply?

NSN 5999-00-613-6781 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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