PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37T21Switch,thermostatic

Therm-O-Disc Incorporated · NSN 5930-00-174-0946 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-174-0946 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-174-0946. Primary manufacturer part number: 37T21.
Features
  • Switch,thermostatic — FSC 5930
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
  • Contact Stimulus Rating: 50.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 30.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
  • Terminal Type: WIRE LEAD
  • Mounting Method: BRACKET(S)
  • Longest Horizontal Distance Between Mounting Centers: 1.560 INCHES NOMINAL IN
  • Contact Action Stimulus: INCREASE
  • Media for Which Designed: GAS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-174-0946, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 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: Active.

Technical Specifications
ParameterValue
NSN5930-00-174-0946
Primary Part Number37T21
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerTherm-O-Disc Incorporated
StatusACTIVE
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Contact Stimulus Rating50.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 30.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Terminal TypeWIRE LEAD
Mounting MethodBRACKET(S)
Longest Horizontal Distance Between Mounting Centers1.560 INCHES NOMINAL IN
Contact Action StimulusINCREASE
Media for Which DesignedGAS
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Body Height1.030 INCHES NOMINAL IN
Contact Voltage Rating in Volts120.0 AC AT SEA LEVEL SINGLE VOLTAGE
Temp Sensing Element TypeINTERNAL SENSOR
Mounting Facility PatternTWO POSITION IN-LINE
Style DesignatorDISC W/FLANGE
Contact Load Current Rating15.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Hazardous Locations/environmental ProtectionWEATHERPROOF
Body Diameter1.190 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6145-00-244-8152UL62SJ3BCK2/18EPCPE INTERCHANGEABLE
Cable,power,electrical
Underwriters Laboratories Inc
5133-00-266-9244 INTERCHANGEABLE
Drill,twist
5975-00-316-235020640 INTERCHANGEABLE
Coupling,electrical Conduit
Schneider Electric Usa, Inc.
5360-00-526-376220640 INTERCHANGEABLE
Spring,helical,compression
Hydro-Aire Aerospace Corp
6145-00-548-1258 INTERCHANGEABLE
Cable,power,electrical
1005-00-868-687720640 INTERCHANGEABLE
Washer,brake
Cadillac Gage Textron Inc.
5360-01-111-4279 INTERCHANGEABLE
Spring
4810-01-130-360420640 INTERCHANGEABLE
Valve,solenoid
De Kalb Precision Industries Inc
6515-01-160-2539206.40 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
5930-01-162-3677C3686602 INTERCHANGEABLE
Switch,thermostatic
Amana Refrigeration Inc Sub of Raytheon Co
Cross-Reference Index
Part NumberManufacturer
11-641927P9 General Electric Co Products Service Sales Major Appliance Business Group (USA)
50X50 General Electric Co Food Service Equipment Business Dept (USA)
WR50X18 Therm-O-Disc Incorporated (USA)
20640 Sensata Technologies, Inc. Div Sensata Attleboro (USA)
WR50X18 Sensata Technologies, Inc. Div Sensata Attleboro (USA)
WR50X18 General Electric Co Products Service Sales Major Appliance Business Group (USA)
20640 Texas Instruments Inc Control Products Div (USA)
WR50X18 General Electric Co Food Service Equipment Business Dept (USA)
37T21 PRIMARY Therm-O-Disc Incorporated (USA)
11-641927P9 Sensata Technologies, Inc. Div Sensata Attleboro (USA)
Related Parts
6145-00-244-8152INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
UL62SJ3BCK2/18EPCPE
5133-00-266-9244INTERCHANGEABLE
DRILL,TWIST
5975-00-316-2350INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
20640
5360-00-526-3762INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20640
6145-00-548-1258INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
1005-00-868-6877INTERCHANGEABLE
WASHER,BRAKE
20640
5360-01-111-4279INTERCHANGEABLE
SPRING
4810-01-130-3604INTERCHANGEABLE
VALVE,SOLENOID
20640
6515-01-160-2539INTERCHANGEABLE
SCREW,BONE
206.40
5930-01-162-3677INTERCHANGEABLE
SWITCH,THERMOSTATIC
C3686602
4820-01-233-8111INTERCHANGEABLE
GUIDE,VALVE STEM
20640
4720-01-350-6246INTERCHANGEABLE
HOSE,NONMETALLIC

Frequently Asked Questions

What is NSN 5930-00-174-0946?

NSN 5930-00-174-0946 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 5930-00-174-0946?

NSN 5930-00-174-0946 has 10 cross-referenced part numbers: 11-641927P9 (General Electric Co Products Service Sales Major Appliance Business Group), 50X50 (General Electric Co Food Service Equipment Business Dept), WR50X18 (Therm-O-Disc Incorporated), 20640 (Sensata Technologies, Inc. Div Sensata Attleboro), WR50X18 (Sensata Technologies, Inc. Div Sensata Attleboro) and 5 more.

What NSN replaces 5930-00-174-0946?

There are 12 known substitutes for 5930-00-174-0946: 6145-00-244-8152, 5133-00-266-9244, 5975-00-316-2350 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37T21?

Key specifications for 37T21: Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION; Contact Stimulus Rating: 50.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 30.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT; Terminal Type: WIRE LEAD; Mounting Method: BRACKET(S). 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com