Electro Switch Corp. · Electronic Components
121902LM
Switch, Rotary
Part Number121902LM
ManufacturerElectro Switch Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-137-4834 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Style DesignatorTAP, CIRCUIT SELECTOR
Overall Height1.875 INCHES NOMINAL
Contact Voltage Rating In Volts125.0 AC AT SEA LEVEL
Overall Width1.875 INCHES NOMINAL
Thread Quantity Per Inch24 SINGLE MOUNTING FACILITY
Thread Class2B SINGLE MOUNTING FACILITY
Overall Length3.156 INCHES NOMINAL
Individual Section Quantity3
Switch Actuator Momentary PositionCLOCKWISE SINGLE ACTUATOR
Features ProvidedACTUATOR KNOB
Nominal Thread Size0.190 INCHES SINGLE MOUNTING FACILITY
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 121902LM available?
We can source 121902LM 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 121902LM by Electro Switch Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 121902LM 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 121902LM?
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 121902LM?
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.