MIL-SPEC · Electronic Components
3SR3A4-2
Switch, Rotary
Part Number3SR3A4-2
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-245-9532 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Criticality Code JustificationFEAT
Switch Actuator Positioning Increm90.0 DEGREES SINGLE ACTUATOR
Features ProvidedACTUATOR KNOB
Style DesignatorCIRCULAR WAFER, PANEL MOUNT
Pole Quantity1 SINGLE SECTION PERIPHERY
Unthreaded Mounting Hole Diameter0.380 INCHES NOMINAL SINGLE MOUNTING FACILITY
Test Data Document81349-MIL-S-15743 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Individual Section Quantity3
Mounting Facility PatternTHREE POSITION CIRCULAR SINGLE MOUNTING FACILITY
Switch Actuator Indexing Position4 SINGLE ACTUATOR
Mounting Facility Circle Radius3.310 INCHES NOMINAL SINGLE MOUNTING FACILITY
Vendor Part NumbersM15743/8-003
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 3SR3A4-2 available?
We can source 3SR3A4-2 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 3SR3A4-2 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3SR3A4-2 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 3SR3A4-2?
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 3SR3A4-2?
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.