PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2221-2ASwitch,thermostatic

Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial · NSN 5930-00-356-2778 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-356-2778 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-356-2778. Primary manufacturer part number: 2221-2A.
Features
  • Switch,thermostatic — FSC 5930
  • Thread Quantity Per Inch: 14 SINGLE THREADED BUSHING
  • Contact Voltage Rating in Volts: 115.0 AC AT SEA LEVEL FIRST VOLTAGE
  • Media for Which Designed: GAS OR LIQUID
  • Contact Adjustability: DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
  • Terminal Type: CONNECTOR, RECEPTACLE
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Contact Action Stimulus: INCREASE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-356-2778, 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 Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-356-2778
Primary Part Number2221-2A
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial
StatusACTIVE
Thread Quantity Per Inch14 SINGLE THREADED BUSHING
Contact Voltage Rating in Volts115.0 AC AT SEA LEVEL FIRST VOLTAGE
Media for Which DesignedGAS OR LIQUID
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Terminal TypeCONNECTOR, RECEPTACLE
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Contact Action StimulusINCREASE
Nominal Thread Size0.500 INCHES SINGLE THREADED BUSHING IN
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
Contact Voltage Rating in Volts28.0 DC AT SEA LEVEL SECOND VOLTAGE
Style DesignatorCYLINDRICAL W/FLANGE
Thread Series DesignatorNPT SINGLE THREADED BUSHING
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
Contact Stimulus Rating115.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Operating Temp Rating-65.0 FAHRENHEIT MINIMUM AND 300.0 FAHRENHEIT MAXIMUM DEGF
Body Diameter0.660 INCHES MAXIMUM IN
Mounting MethodTHREADED BUSHING
Hazardous Locations/environmental ProtectionDUSTPROOF
Features ProvidedAUTOMATIC RESET
Body Length4.000 INCHES NOMINAL IN
Width Across Flats1.125 INCHES NOMINAL IN
Temp Sensing Element TypeINTERNAL SENSOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4810-00-152-2123TC-1 INTERCHANGEABLE
Seat,valve
Circor Naval Solutions Llc Dba Warren Pumps
6140-00-191-8506A-A-55439-3-1-475-D INTERCHANGEABLE
Battery,storage
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
7045-00-204-7217 INTERCHANGEABLE
Cartridge and Tissu
5340-00-264-95260033040 INTERCHANGEABLE
Clamp,loop
New Holland Construction
5950-00-786-4135 INTERCHANGEABLE
Reactor
2030-01-540-5396TC1 INTERCHANGEABLE
Kit,trough Cover
Jtekt Column Systems North America Corporation Div Jtekt Column Systems North Amercia
5340-01-561-620823N3646 INTERCHANGEABLE
Clip,retaining
Newark Electronics Corporation Dba Newark
Cross-Reference Index
Part NumberManufacturer
TC1 Torr Laboratories Inc (USA)
2221-2A PRIMARY Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial (USA)
810643-401 Mag Aerospace Industries Inc.,dba Monogramsystems Dba Monogram Systems (USA)
810643-401 Mag Aerospace Industries, Llc Div Safran Cabins (USA)
Related Parts
4810-00-152-2123INTERCHANGEABLE
SEAT,VALVE
TC-1
6140-00-191-8506INTERCHANGEABLE
BATTERY,STORAGE
A-A-55439-3-1-475-D
7045-00-204-7217INTERCHANGEABLE
CARTRIDGE AND TISSU
5340-00-264-9526INTERCHANGEABLE
CLAMP,LOOP
0033040
5950-00-786-4135INTERCHANGEABLE
REACTOR
2030-01-540-5396INTERCHANGEABLE
KIT,TROUGH COVER
TC1
5340-01-561-6208INTERCHANGEABLE
CLIP,RETAINING
23N3646

Frequently Asked Questions

What is NSN 5930-00-356-2778?

NSN 5930-00-356-2778 is a Switch,thermostatic, manufactured by Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-356-2778?

NSN 5930-00-356-2778 has 4 cross-referenced part numbers: TC1 (Torr Laboratories Inc), 2221-2A (Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial), 810643-401 (Mag Aerospace Industries Inc.,dba Monogramsystems Dba Monogram Systems), 810643-401 (Mag Aerospace Industries, Llc Div Safran Cabins).

What NSN replaces 5930-00-356-2778?

There are 7 known substitutes for 5930-00-356-2778: 4810-00-152-2123, 6140-00-191-8506, 7045-00-204-7217 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2221-2A?

Key specifications for 2221-2A: Overall Length: 5.060 INCHES NOMINAL IN; Thread Quantity Per Inch: 14 SINGLE THREADED BUSHING; Contact Voltage Rating in Volts: 115.0 AC AT SEA LEVEL FIRST VOLTAGE; Media for Which Designed: GAS OR LIQUID. 23 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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