Electro Switch Corp. · Electronic Components
257999A2
Switch, Rotary
Part Number257999A2
ManufacturerElectro Switch Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-408-2278 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Pole Quantity3 EACH SECTION REAR
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR
Operating Temp Range-65.0 TO 85.0 CELSIUS
Nonturn Device Radius0.375 INCHES NOMINAL AT 3:00 OCLOCK
Switch Actuator Indexing Position3 SINGLE ACTUATOR
Flat Height0.216 INCHES NOMINAL SINGLE ACTUATOR
Shaft Length0.813 INCHES NOMINAL SINGLE ACTUATOR
Style DesignatorCIRCULAR WAFER, BUSHING MOUNT
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Thread Length0.313 INCHES NOMINAL SINGLE MOUNTING FACILITY
Contact Switching ActionBREAKS BEFORE MAKES EACH SECTION REAR
Vendor Part Numbers145551-1
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 257999A2 available?
We can source 257999A2 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 257999A2 by Electro Switch Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 257999A2 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 257999A2?
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 257999A2?
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.