National Security Agency · Electronic Components
0N278443-8
Switch, Rotary
Part Number0N278443-8
ManufacturerNational Security Agency
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-102-8889 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Shaft Flat Slot Angular Location18.0 DEGREES FROM CONTACT POSITION 1 SINGLE ACTUATOR
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Pole Quantity1 EACH SECTION FRONT
Nominal Thread Size0.250 INCHES SINGLE MOUNTING FACILITY
Mounting MethodTHREADED BUSHING WITH PANEL SEAL SINGLE MOUNTING FACILITY
Hazardous Locations EnvironmentalEXPLOSION PROOF
Shaft Diameter0.125 INCHES NOMINAL SINGLE ACTUATOR
Nonturn Device TypeFLATTED BUSHING AT 9:00 OCLOCK
Overall Diameter0.725 INCHES NOMINAL
Vendor Part Numbers71MY231928
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 0N278443-8 available?
We can source 0N278443-8 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 0N278443-8 by National Security Agency obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 0N278443-8 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 0N278443-8?
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 0N278443-8?
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.