Sensata Technologies · Electronic Components
21729-2
Switch, Thermostatic
Part Number21729-2
ManufacturerSensata Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-195-3241 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Overall Length1.300 INCHES NOMINAL
Style DesignatorDISC W/FLANGE
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Features ProvidedHERMETICALLY SEALED CASE
Contact Action StimulusDECREASE
Contact Stimulus Rating127.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 135.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Mounting Facility PatternTWO POSITION IN-LINE
Terminal TypeCONNECTOR, RECEPTACLE
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL SINGLE VOLTAGE
Body Diameter0.670 INCHES MAXIMUM
Body Height1.230 INCHES MAXIMUM
Vendor Part Numbers644792-107, 975-0097-004
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 21729-2 available?
We can source 21729-2 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 21729-2 by Sensata Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21729-2 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 21729-2?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 21729-2?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.