PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

523527-230Heater,thermal Release

Instruments and Flight Research, Inc. · NSN 5999-00-754-7567 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-754-7567 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-754-7567. Primary manufacturer part number: 523527-230.
Features
  • Heater,thermal Release — FSC 5999
  • Current Rating for Which Designed: 35.5 AMPERES MINIMUM AND 37.5 AMPERES MAXIMUM
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S)
  • Mounting Hole Diameter: 0.145 INCHES NOMINAL IN
  • Current Rating for Which Designed: 35.5 AMPERES MINIMUM AND 37.5 AMPERES MAXIMUM
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S)
  • Mounting Hole Diameter: 0.145 INCHES NOMINAL IN
  • 5 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-754-7567, 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 Instruments and Flight Research, Inc.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-754-7567
Primary Part Number523527-230
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerInstruments and Flight Research, Inc.
StatusCANCELLED
Current Rating for Which Designed35.5 AMPERES MINIMUM AND 37.5 AMPERES MAXIMUM
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Mounting Hole Diameter0.145 INCHES NOMINAL IN
Current Rating for Which Designed35.5 AMPERES MINIMUM AND 37.5 AMPERES MAXIMUM
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Mounting Hole Diameter0.145 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.1000 lbs
Cube0.0130 cu ft
Verified Substitutes 8
No Item Name Available
3455-00-228-523841011 INTERCHANGEABLE
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Doall Baltimore Company
5120-00-490-4848 INTERCHANGEABLE
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5360-00-493-835480083 INTERCHANGEABLE
Spring,helical,compression
Goodrich Corporation Dba Goodrich Corp, a New York Corp
6150-00-583-955380083 INTERCHANGEABLE
Lead,electrical
Frontgrade Technologies Inc.
2910-00-646-9727 INTERCHANGEABLE
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2940-00-912-291042230 INTERCHANGEABLE
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7690-01-378-6384422-30 INTERCHANGEABLE
Marker,identification
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Cross-Reference Index
Part NumberManufacturer
523527-230 PRIMARY Instruments and Flight Research, Inc. (USA)
42230 PRIMARY Cooper Industries /canada/ Inccrouse-Hinds Div (CAN)
521983-43 Instruments and Flight Research, Inc. (USA)
42230 Cooper Industries Inc Cooper Distribution Equipment Div (USA)
80083 Raytheon Technical Services Company (USA)
Related Parts
5999-00-674-5774SUCCESSOR
NO ITEM NAME AVAILABLE
3455-00-228-5238INTERCHANGEABLE
CUTTER,MILLING,END
41011
5120-00-490-4848INTERCHANGEABLE
WRENCH-JEWELERS PEN
5360-00-493-8354INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
80083
6150-00-583-9553INTERCHANGEABLE
LEAD,ELECTRICAL
80083
2910-00-646-9727INTERCHANGEABLE
CYLINDER,ENGINE STARTING
2940-00-912-2910INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42230
7690-01-378-6384INTERCHANGEABLE
MARKER,IDENTIFICATION
422-30

Frequently Asked Questions

What is NSN 5999-00-754-7567?

NSN 5999-00-754-7567 is a Heater,thermal Release, manufactured by Instruments and Flight Research, Inc., classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-754-7567?

NSN 5999-00-754-7567 has 5 cross-referenced part numbers: 523527-230 (Instruments and Flight Research, Inc.), 42230 (Cooper Industries /canada/ Inccrouse-Hinds Div), 521983-43 (Instruments and Flight Research, Inc.), 42230 (Cooper Industries Inc Cooper Distribution Equipment Div), 80083 (Raytheon Technical Services Company).

What NSN replaces 5999-00-754-7567?

There are 8 known substitutes for 5999-00-754-7567: 5999-00-674-5774, 3455-00-228-5238, 5120-00-490-4848 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 523527-230?

Key specifications for 523527-230: Overall Height: 0.375 INCHES NOMINAL IN; Current Rating for Which Designed: 35.5 AMPERES MINIMUM AND 37.5 AMPERES MAXIMUM; Overall Length: 1.906 INCHES NOMINAL IN; Overall Width: 0.344 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-754-7567 still in active supply?

NSN 5999-00-754-7567 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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