PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

612857-3Switch,thermostatic

Lockheed Martin Corp · NSN 5930-00-636-3241 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-636-3241 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-636-3241. Primary manufacturer part number: 612857-3.
Features
  • Switch,thermostatic — FSC 5930
  • Features Provided: AUTOMATIC RESET
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
  • Contact Action Stimulus: INCREASE
  • Mounting Method: FLANGE
  • Contact Adjustability: ACTUATION POINT NOT ADJUSTABLE
  • Media for Which Designed: GAS OR LIQUID
  • Contact Voltage Rating in Volts: 230.0 AC AT SEA LEVEL SINGLE VOLTAGE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-636-3241, 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 Lockheed Martin Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-636-3241
Primary Part Number612857-3
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusCANCELLED
Features ProvidedAUTOMATIC RESET
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Contact Action StimulusINCREASE
Mounting MethodFLANGE
Contact AdjustabilityACTUATION POINT NOT ADJUSTABLE
Media for Which DesignedGAS OR LIQUID
Contact Voltage Rating in Volts230.0 AC AT SEA LEVEL SINGLE VOLTAGE
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Contact Stimulus Rating350.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 349.90 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Terminal TypeTAB W/SCREW
Hazardous Locations/environmental ProtectionDUSTPROOF
Temp Sensing Element TypeINTERNAL SENSOR
Mounting Facility PatternTHREE POSITION CIRCULAR
Mounting Facility Circle Radius1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5305-00-080-0744F6-4-4L INTERCHANGEABLE
Screw,machine
Bae Systems Information and Electronic Systems Integration Inc.
5935-00-540-9066ST5M1302-001 INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company Div Defense
5930-00-683-15421500P48 INTERCHANGEABLE
Switch,pressure
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
6510-01-587-8788MSC8438 INTERCHANGEABLE
Dressing,wet
Medline Industries, Lp
Cross-Reference Index
Part NumberManufacturer
612857-3 PRIMARY Lockheed Martin Corp (USA)
02-018422-000 Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA)
18422 Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA)
18422-0-350 Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA)
18422-0-350F PRIMARY Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA)
Related Parts
5305-00-080-0744INTERCHANGEABLE
SCREW,MACHINE
F6-4-4L
5935-00-540-9066INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1302-001
5930-00-683-1542INTERCHANGEABLE
SWITCH,PRESSURE
1500P48
6510-01-587-8788INTERCHANGEABLE
DRESSING,WET
MSC8438

Frequently Asked Questions

What is NSN 5930-00-636-3241?

NSN 5930-00-636-3241 is a Switch,thermostatic, manufactured by Lockheed Martin Corp, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-636-3241?

NSN 5930-00-636-3241 has 5 cross-referenced part numbers: 612857-3 (Lockheed Martin Corp), 02-018422-000 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems), 18422 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems), 18422-0-350 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems), 18422-0-350F (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems).

What NSN replaces 5930-00-636-3241?

There are 4 known substitutes for 5930-00-636-3241: 5305-00-080-0744, 5935-00-540-9066, 5930-00-683-1542 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 612857-3?

Key specifications for 612857-3: Features Provided: AUTOMATIC RESET; Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION; Contact Action Stimulus: INCREASE; Mounting Method: FLANGE. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-636-3241 still in active supply?

NSN 5930-00-636-3241 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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