PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

YC66DS1Switch,thermostatic

Wisconsin Motors, Llc · NSN 5930-00-775-7577 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-775-7577 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-775-7577. Primary manufacturer part number: YC66DS1.
Features
  • Switch,thermostatic — FSC 5930
  • Contact Adjustability: ACTUATION POINT NOT ADJUSTABLE
  • Contact Action Stimulus: INCREASE
  • Media for Which Designed: GAS OR LIQUID
  • Mounting Method: SURFACE AND UNTHREADED HOLE(S)
  • Temp Sensing Element Type: INTERNAL SENSOR
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Terminal Type: QUICK DISCONNECT, FEMALE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-775-7577, 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 Wisconsin Motors, Llc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-775-7577
Primary Part NumberYC66DS1
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusCANCELLED
Contact AdjustabilityACTUATION POINT NOT ADJUSTABLE
Contact Action StimulusINCREASE
Media for Which DesignedGAS OR LIQUID
Mounting MethodSURFACE AND UNTHREADED HOLE(S)
Temp Sensing Element TypeINTERNAL SENSOR
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Terminal TypeQUICK DISCONNECT, FEMALE
Contact Stimulus Rating480.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Unthreaded Mounting Hole Diameter0.391 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5315-00-264-3099 INTERCHANGEABLE
Key,machine
3439-00-426-0392W75-5 INTERCHANGEABLE
Desoldering Wick
Hexacon Electric Company
5955-00-499-7335712731-4 INTERCHANGEABLE
Crystal Unit,quartz
Raytheon Company Div Rmd Strategic
5935-00-503-97989955 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5950-00-840-5420 INTERCHANGEABLE
Transformer,radio Frequency
5962-01-154-69239955 INTERCHANGEABLE
Microcircuit,linear
Lockheed Martin Corporation Div Rms
5985-01-268-4312 INTERCHANGEABLE
Attenuator,variable
6510-01-459-38659955 INTERCHANGEABLE
Dressing,hydrocolloid
Hollister Inc
5340-01-602-62519955 INTERCHANGEABLE
Clamp,loop
Harley Davidson Motor Co Inc
Cross-Reference Index
Part NumberManufacturer
YC66 Wisconsin Motors, Llc (USA)
YC66DS1 PRIMARY Wisconsin Motors, Llc (USA)
YC66DSI Wisconsin Motors, Llc (USA)
JHP110-181 Hollingsworth John R Co (USA)
YC-66-D-S1 Norton Company Dba Norton Construction Products Div Construction Products Div (USA)
JHP42-072 Hollingsworth John R Co (USA)
YC66D Wisconsin Motors, Llc (USA)
9955 Lowndes Engineering Co Inc (USA)
YC66DS Wisconsin Motors, Llc (USA)
Related Parts
5315-00-264-3099INTERCHANGEABLE
KEY,MACHINE
3439-00-426-0392INTERCHANGEABLE
DESOLDERING WICK
W75-5
5955-00-499-7335INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
712731-4
5935-00-503-9798INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
9955
5950-00-840-5420INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5962-01-154-6923INTERCHANGEABLE
MICROCIRCUIT,LINEAR
9955
5985-01-268-4312INTERCHANGEABLE
ATTENUATOR,VARIABLE
6510-01-459-3865INTERCHANGEABLE
DRESSING,HYDROCOLLOID
9955
5340-01-602-6251INTERCHANGEABLE
CLAMP,LOOP
9955

Frequently Asked Questions

What is NSN 5930-00-775-7577?

NSN 5930-00-775-7577 is a Switch,thermostatic, manufactured by Wisconsin Motors, Llc, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-775-7577?

NSN 5930-00-775-7577 has 9 cross-referenced part numbers: YC66 (Wisconsin Motors, Llc), YC66DS1 (Wisconsin Motors, Llc), YC66DSI (Wisconsin Motors, Llc), JHP110-181 (Hollingsworth John R Co), YC-66-D-S1 (Norton Company Dba Norton Construction Products Div Construction Products Div) and 4 more.

What NSN replaces 5930-00-775-7577?

There are 9 known substitutes for 5930-00-775-7577: 5315-00-264-3099, 3439-00-426-0392, 5955-00-499-7335 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of YC66DS1?

Key specifications for YC66DS1: Contact Adjustability: ACTUATION POINT NOT ADJUSTABLE; Contact Action Stimulus: INCREASE; Media for Which Designed: GAS OR LIQUID; Mounting Method: SURFACE AND UNTHREADED HOLE(S). 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-775-7577 still in active supply?

NSN 5930-00-775-7577 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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