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Stewart-Warner  · Electronic Components

438039

Switch, Thermostatic

Part Number438039
ManufacturerStewart-Warner
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Contact Action StimulusINCREASE
Temp Sensing Element TypeBOURDON TUBE
Mounting MethodIMMERSION WELL
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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

Frequently asked

Is 438039 available?
We can source 438039 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 438039 by Stewart-Warner obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 438039 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 438039?
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 438039?
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.