PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18021-0Switch,thermostatic

Kidde-Fenwal, Llc · NSN 5930-00-296-3987 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-296-3987 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-296-3987. Primary manufacturer part number: 18021-0.
Features
  • Switch,thermostatic — FSC 5930
  • Body Diameter: 0.618 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
  • Contact Adjustment Type: EXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW
  • Media for Which Designed: GAS OR LIQUID
  • Thread Series Designator: NPT SINGLE THREADED BUSHING
  • Contact Load Current Rating: 5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
  • Contact Voltage Rating in Volts: 115.0 AC AT SEA LEVEL SECOND VOLTAGE
  • Thread Quantity Per Inch: 14 SINGLE THREADED BUSHING
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-296-3987, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Kidde-Fenwal, Llc. Government technical data includes 20 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.

Technical Specifications
ParameterValue
NSN5930-00-296-3987
Primary Part Number18021-0
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerKidde-Fenwal, Llc
StatusCANCELLED
Body Diameter0.618 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Contact Adjustment TypeEXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW
Media for Which DesignedGAS OR LIQUID
Thread Series DesignatorNPT SINGLE THREADED BUSHING
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
Contact Voltage Rating in Volts115.0 AC AT SEA LEVEL SECOND VOLTAGE
Thread Quantity Per Inch14 SINGLE THREADED BUSHING
Contact Voltage Rating in Volts230.0 AC AT SEA LEVEL FIRST VOLTAGE
Nominal Thread Size0.500 INCHES SINGLE THREADED BUSHING IN
Contact Adjustment Range-100.00 TO 350.00 ACTUATION POINT DEGREES FAHRENHEIT AND -100.00 TO 350.00 DEACTUATION POINT DEGREES FAHRENHEIT
Contact AdjustabilityDEACTUATION POINT ADJUSTABLE AND ACTUATION POINT ADJUSTABLE
Style DesignatorCYLINDRICAL W/FLANGE
Terminal TypeWIRE LEAD
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Contact Load Current Rating10.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
Contact Action StimulusINCREASE
Width Across Flats1.000 INCHES NOMINAL IN
Temp Sensing Element TypeIMMERSION WELL
Mounting MethodTHREADED BUSHING
Operating Temp Rating800.0 FAHRENHEIT MAXIMUM DEGF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5133-00-189-9266 INTERCHANGEABLE
Drill,twist
5935-00-196-653518-16S INTERCHANGEABLE
Connector,receptacle,electrical
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect Rf Corporation
1240-00-235-234118021 INTERCHANGEABLE
Holder,optical Element
Gyrus Acmi L.p. Dba Circon-Acmi Div
3455-00-239-5611INVOLUTE 30-6 INTERCHANGEABLE
Cutter,milling,involute Gear
F & D Tool Co Inc
5815-00-244-4446180210 INTERCHANGEABLE
Keytop,keyboard
Lucent Technologies Inc Corporate Headquarters
5905-00-259-7656 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
4720-00-326-079318021 INTERCHANGEABLE
Duct,generator Cool
Triumph Thermal Systems - Maryland, Inc.
5330-00-424-5625 INTERCHANGEABLE
Gasket
4330-00-463-378711455071 INTERCHANGEABLE
Filter Element,fluid
Us Army Aviation and Missile Command
5330-00-579-5054383940 INTERCHANGEABLE
Gasket
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Cross-Reference Index
Part NumberManufacturer
18021-0 PRIMARY Kidde-Fenwal, Llc (USA)
01-18021-0 Honeywell International Inc. Dba Honeywell Div Sensing & Control (USA)
18021 Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA)
1551AS664-1 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
A220879 Joy Global Underground Mining Llc (USA)
18021-0 Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA)
18021 Kidde-Fenwal, Llc (USA)
Related Parts
5133-00-189-9266INTERCHANGEABLE
DRILL,TWIST
5935-00-196-6535INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
18-16S
1240-00-235-2341INTERCHANGEABLE
HOLDER,OPTICAL ELEMENT
18021
3455-00-239-5611INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
INVOLUTE 30-6
5815-00-244-4446INTERCHANGEABLE
KEYTOP,KEYBOARD
180210
5905-00-259-7656INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
4720-00-326-0793INTERCHANGEABLE
DUCT,GENERATOR COOL
18021
5330-00-424-5625INTERCHANGEABLE
GASKET
4330-00-463-3787INTERCHANGEABLE
FILTER ELEMENT,FLUID
11455071
5330-00-579-5054INTERCHANGEABLE
GASKET
383940
5935-00-947-6570INTERCHANGEABLE
JACK,TIP
SMB523987-9
5950-00-997-2048INTERCHANGEABLE
REACTOR
580R265H01

Frequently Asked Questions

What is NSN 5930-00-296-3987?

NSN 5930-00-296-3987 is a Switch,thermostatic, manufactured by Kidde-Fenwal, Llc, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-296-3987?

NSN 5930-00-296-3987 has 7 cross-referenced part numbers: 18021-0 (Kidde-Fenwal, Llc), 01-18021-0 (Honeywell International Inc. Dba Honeywell Div Sensing & Control), 18021 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems), 1551AS664-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), A220879 (Joy Global Underground Mining Llc) and 2 more.

What NSN replaces 5930-00-296-3987?

There are 12 known substitutes for 5930-00-296-3987: 5133-00-189-9266, 5935-00-196-6535, 1240-00-235-2341 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18021-0?

Key specifications for 18021-0: Body Diameter: 0.618 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Contact Adjustment Type: EXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW; Media for Which Designed: GAS OR LIQUID; Thread Series Designator: NPT SINGLE THREADED BUSHING. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-296-3987 still in active supply?

NSN 5930-00-296-3987 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.
PartsTable Design LLC · partstable.com