General Dynamics Mission Systems, Inc. · Electronic Components
340A3960
Switch, Rotary
Part Number340A3960
ManufacturerGeneral Dynamics Mission Systems, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-583-5258 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Individual Section Quantity1
Thread Length0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY
Contact Switching ActionMAKES BEFORE BREAKS SINGLE SECTION REAR
Thread Series DesignatorUNEF SINGLE MOUNTING FACILITY
First Flat Length0.469 INCHES NOMINAL SINGLE ACTUATOR
Switch Actuator Positioning Increm30.0 DEGREES SINGLE ACTUATOR
Shaft Length0.906 INCHES NOMINAL SINGLE ACTUATOR
Nominal Thread Size0.375 INCHES SINGLE MOUNTING FACILITY
Switch Contact Basic DesignNONPILE-UP NONSYMMETRICAL
Terminal TypeTAB, SOLDER LUG
Vendor Part NumbersSMB179030, 5-11148-218, 55340TYPE23A
Cancelled NSN5930-00-034-1748 (cancelled)
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 340A3960 available?
We can source 340A3960 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 340A3960 by General Dynamics Mission Systems, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 340A3960 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 340A3960?
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 340A3960?
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.