MIL-SPEC · Electronic Components
1SR4A42
Switch, Rotary
Part Number1SR4A42
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-259-7368 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Contact Voltage Rating In Volts120.0 AC AT SEA LEVEL
Throw Quantity1 EACH SECTION REAR
Knob Manufacturer Code10001
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Mounting MethodBASE SINGLE MOUNTING FACILITY
Shaft Diameter0.218 INCHES NOMINAL SINGLE ACTUATOR
Shaft TypeROUND SINGLE ACTUATOR
Switch Actuator Positioning Increm90.0 DEGREES SINGLE ACTUATOR
Hazardous Locations EnvironmentalWATERTIGHT
Features ProvidedACTUATOR KNOB AND METALLIC ENCLOSURE
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 1SR4A42 available?
We can source 1SR4A42 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 1SR4A42 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1SR4A42 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 1SR4A42?
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 1SR4A42?
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.