Lockheed Martin Corporation · Electronic Components
748221
Switch, Thermostatic
Part Number748221
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-583-6642 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Contact Action StimulusINCREASE
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL FIRST VOLTAGE
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
Contact Stimulus Rating30.00 DIFFERENTIAL POINT NOMINAL DEGREES FAHRENHEIT AND 40.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Mounting MethodBRACKET(S)
Overall Diameter0.656 INCHES NOMINAL
Contact AdjustabilityACTUATION POINT NOT ADJUSTABLE
Temp Sensing Element TypeINTERNAL SENSOR
Overall Length1.092 INCHES NOMINAL
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Terminal TypeTAB, SOLDER LUG
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 748221 available?
We can source 748221 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 748221 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 748221 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 748221?
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 748221?
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.