PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

36T21-52740Switch,thermostatic

Therm-O-Disc Incorporated · NSN 5930-01-085-3357 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-01-085-3357 — this item is cataloged by the U.S. Government under National Stock Number 5930-01-085-3357. Primary manufacturer part number: 36T21-52740.
Features
  • Switch,thermostatic — FSC 5930
  • Contact Stimulus Rating: 270.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 245.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
  • Contact Adjustability: DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
  • Media for Which Designed: GAS OR LIQUID
  • Contact Load Current Rating: 10.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
  • Terminal Type: TAB, SOLDER LUG
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
  • Features Provided: HERMETICALLY SEALED CASE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-01-085-3357, 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 Therm-O-Disc Incorporated. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-01-085-3357
Primary Part Number36T21-52740
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerTherm-O-Disc Incorporated
StatusACTIVE
Contact Stimulus Rating270.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 245.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Media for Which DesignedGAS OR LIQUID
Contact Load Current Rating10.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Terminal TypeTAB, SOLDER LUG
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Features ProvidedHERMETICALLY SEALED CASE
Contact Action StimulusINCREASE
Style DesignatorDISC W/FLANGE
Body Diameter0.625 INCHES NOMINAL IN
Mounting MethodBRACKET(S) AND UNTHREADED HOLE(S)
Unthreaded Mounting Hole Diameter0.145 INCHES NOMINAL IN
Temp Sensing Element TypeINTERNAL SENSOR
Mounting Facility PatternTWO POSITION IN-LINE
Operating Temp Rating350.0 FAHRENHEIT MAXIMUM DEGF
Body Height0.359 INCHES NOMINAL IN
Distance Between Mounting Facility Centers0.938 INCHES NOMINAL IN
Contact Voltage Rating in Volts240.0 AC AT SEA LEVEL SINGLE VOLTAGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5950-00-080-21076291 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5305-00-151-276810024 INTERCHANGEABLE
Screw,machine
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
2920-00-376-8334E6291 INTERCHANGEABLE
Contact Set,magneto
Prestolite Electric Inc
6680-00-865-85866291X INTERCHANGEABLE
Gage Rod,liquid Level
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5950-01-175-00445189627-003 INTERCHANGEABLE
Transformer,power
Naval Sea Systems Command
5930-01-210-40616291 INTERCHANGEABLE
Switch Subassembly
Carlisle & Finch Co
4240-01-342-52387000126163 INTERCHANGEABLE
Respirator,air Filtering
3m Company
3040-01-368-74606291 INTERCHANGEABLE
Cylinder,actuating,linear
Rosco Mfg Co
Cross-Reference Index
Part NumberManufacturer
6291 Hdt Expeditionary Systems Inc (USA)
36T21 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
36T21 Therm-O-Disc Incorporated (USA)
36T21-52740 PRIMARY Therm-O-Disc Incorporated (USA)
Related Parts
5950-00-080-2107INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
6291
5305-00-151-2768INTERCHANGEABLE
SCREW,MACHINE
10024
2920-00-376-8334INTERCHANGEABLE
CONTACT SET,MAGNETO
E6291
6680-00-865-8586INTERCHANGEABLE
GAGE ROD,LIQUID LEVEL
6291X
5950-01-175-0044INTERCHANGEABLE
TRANSFORMER,POWER
5189627-003
5930-01-210-4061INTERCHANGEABLE
SWITCH SUBASSEMBLY
6291
4240-01-342-5238INTERCHANGEABLE
RESPIRATOR,AIR FILTERING
7000126163
3040-01-368-7460INTERCHANGEABLE
CYLINDER,ACTUATING,LINEAR
6291

Frequently Asked Questions

What is NSN 5930-01-085-3357?

NSN 5930-01-085-3357 is a Switch,thermostatic, manufactured by Therm-O-Disc Incorporated, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-01-085-3357?

NSN 5930-01-085-3357 has 4 cross-referenced part numbers: 6291 (Hdt Expeditionary Systems Inc), 36T21 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 36T21 (Therm-O-Disc Incorporated), 36T21-52740 (Therm-O-Disc Incorporated).

What NSN replaces 5930-01-085-3357?

There are 8 known substitutes for 5930-01-085-3357: 5950-00-080-2107, 5305-00-151-2768, 2920-00-376-8334 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 36T21-52740?

Key specifications for 36T21-52740: Contact Stimulus Rating: 270.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 245.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT; Contact Adjustability: DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE; Media for Which Designed: GAS OR LIQUID; Contact Load Current Rating: 10.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE. 20 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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