Electro Switch Corp. · Electronic Components
31903NH
Switch, Rotary
Part Number31903NH
ManufacturerElectro Switch Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-188-8844 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Terminal TypeSCREW
Features ProvidedACTUATOR KNOB AND LEGEND PLATE
Switch Actuator Positioning Increm45.0 DEGREES SINGLE ACTUATOR
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Contact Load Current Rating1.0 AMPERES RESISTIVE LOAD HIGHEST DC VOLTAGE RATING AT SEA LEVEL
Precious Material And LocationCONTACTS AND ROTOR BLADE SURFACES SILVER
Overall Length3.690 INCHES NOMINAL
Mounting Facility PatternFOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY
Overall Width2.130 INCHES NOMINAL
Thread Class2B 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 31903NH available?
We can source 31903NH 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 31903NH by Electro Switch Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 31903NH 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 31903NH?
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 31903NH?
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.