PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M554Switch,thermostatic

Way Wolff Associates Inc · NSN 5930-00-259-8816 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-259-8816 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-259-8816. Primary manufacturer part number: M554.
Features
  • Switch,thermostatic — FSC 5930
  • Contact Load Current Rating: 3.7 AMPERES RESISTIVE LOAD SECOND VOLTAGE
  • Contact Load Current Rating: 7.4 AMPERES RESISTIVE LOAD FIRST VOLTAGE
  • Capillary Tube Length: 2.750 INCHES NOMINAL IN
  • Contact Voltage Rating in Volts: 115.0 DC AT SEA LEVEL THIRD VOLTAGE
  • Media for Which Designed: LIQUID
  • Terminal Type: TAB W/SCREW
  • Contact Adjustability: ACTUATION POINT ADJUSTABLE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-259-8816, 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 Way Wolff Associates Inc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-259-8816
Primary Part NumberM554
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerWay Wolff Associates Inc
StatusACTIVE
Contact Load Current Rating3.7 AMPERES RESISTIVE LOAD SECOND VOLTAGE
Contact Load Current Rating7.4 AMPERES RESISTIVE LOAD FIRST VOLTAGE
Capillary Tube Length2.750 INCHES NOMINAL IN
Contact Voltage Rating in Volts115.0 DC AT SEA LEVEL THIRD VOLTAGE
Media for Which DesignedLIQUID
Terminal TypeTAB W/SCREW
Contact AdjustabilityACTUATION POINT ADJUSTABLE
Nominal Thread Size0.750 INCHES SINGLE THREADED BUSHING IN
Contact Load Current Rating1.2 AMPERES RESISTIVE LOAD FOURTH VOLTAGE
Contact Voltage Rating in Volts115.0 AC AT SEA LEVEL FIRST VOLTAGE
Thread Quantity Per Inch14 SINGLE THREADED BUSHING
Thread Length1.812 INCHES NOMINAL SINGLE THREADED BUSHING IN
Contact Voltage Rating in Volts230.0 DC AT SEA LEVEL FOURTH VOLTAGE
Contact Load Current Rating2.4 AMPERES RESISTIVE LOAD THIRD VOLTAGE
Contact Adjustment Range+100.00 TO 240.00 ACTUATION POINT DEGREES FAHRENHEIT
Contact Voltage Rating in Volts230.0 AC AT SEA LEVEL SECOND VOLTAGE
Contact Action StimulusINCREASE
Thread Series DesignatorUNS SINGLE THREADED BUSHING
Temp Sensing Element TypeCAPILLARY TUBE
Mounting MethodTHREADED BUSHING
Operating Temp Rating50.0 FAHRENHEIT MINIMUM AND 240.0 FAHRENHEIT MAXIMUM DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-155-6720 INTERCHANGEABLE
Bearing,ball,annular
1615-00-332-9937S12-35-6043 INTERCHANGEABLE
Sleeve,shaft,tail Gearbox
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
5998-01-010-2037M168-00 INTERCHANGEABLE
Circuit Card Assembly
Compaq Federal Llc
1560-01-551-2204M-168 INTERCHANGEABLE
Sam Power Supply,ai
Eon Instrumentation, Inc.
Cross-Reference Index
Part NumberManufacturer
M168 Way Wolff Associates Inc (USA)
M554 PRIMARY Way Wolff Associates Inc (USA)
Related Parts
3110-00-155-6720INTERCHANGEABLE
BEARING,BALL,ANNULAR
1615-00-332-9937INTERCHANGEABLE
SLEEVE,SHAFT,TAIL GEARBOX
S12-35-6043
5998-01-010-2037INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
M168-00
1560-01-551-2204INTERCHANGEABLE
SAM POWER SUPPLY,AI
M-168

Frequently Asked Questions

What is NSN 5930-00-259-8816?

NSN 5930-00-259-8816 is a Switch,thermostatic, manufactured by Way Wolff Associates Inc, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-259-8816?

NSN 5930-00-259-8816 has 2 cross-referenced part numbers: M168 (Way Wolff Associates Inc), M554 (Way Wolff Associates Inc).

What NSN replaces 5930-00-259-8816?

There are 4 known substitutes for 5930-00-259-8816: 3110-00-155-6720, 1615-00-332-9937, 5998-01-010-2037 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M554?

Key specifications for M554: Contact Load Current Rating: 3.7 AMPERES RESISTIVE LOAD SECOND VOLTAGE; Contact Load Current Rating: 7.4 AMPERES RESISTIVE LOAD FIRST VOLTAGE; Capillary Tube Length: 2.750 INCHES NOMINAL IN; Contact Voltage Rating in Volts: 115.0 DC AT SEA LEVEL THIRD VOLTAGE. 25 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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