Lockheed Martin · Electronic Components
77C721903P1
Switch, Thermostatic
Part Number77C721903P1
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-360-3145 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE THREADED BUSHING
Thread Class2A SINGLE THREADED BUSHING
Temp Sensing Element TypeINTERNAL SENSOR
Overall Diameter0.540 INCHES MINIMUM AND 0.640 INCHES MAXIMUM
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL SINGLE VOLTAGE
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Contact Stimulus Rating158.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Overall Height0.680 INCHES NOMINAL
Thread Quantity Per Inch32 SINGLE THREADED BUSHING
Body Height0.437 INCHES MAXIMUM
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 77C721903P1 available?
We can source 77C721903P1 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 77C721903P1 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 77C721903P1 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 77C721903P1?
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 77C721903P1?
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.