Lockheed Martin · Electronic Components
C138-3
Switch, Rotary
Part NumberC138-3
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-485-5811 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Shaft Diameter0.247 INCHES NOMINAL SINGLE ACTUATOR
Contact Load Current Rating3.0 AMPERES RESISTIVE LOAD AND 2.0 AMPERES INDUCTIVE LOAD AND 2.0 AMPERES LAMP LOAD DC AT SEA LEVEL
First Flat Length0.468 INCHES NOMINAL SINGLE ACTUATOR
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Hazardous Locations EnvironmentalEXPLOSION PROOF
Throw Quantity18 EACH SECTION FRONT
Nominal Thread Size0.469 INCHES SINGLE MOUNTING FACILITY
Switch Actuator Indexing Position18 SINGLE ACTUATOR
Shaft Flat Slot Angular Location0.0 DEGREES FROM CONTACT POSITION 1 SINGLE ACTUATOR
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Vendor Part Numbers12-1915-1
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 C138-3 available?
We can source C138-3 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 C138-3 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If C138-3 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 C138-3?
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 C138-3?
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.