Janco Corporation · Electronic Components
27-1955
Switch, Rotary
Part Number27-1955
ManufacturerJanco Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-849-0393 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Shaft Diameter0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE ACTUATOR
Overall Diameter1.100 INCHES NOMINAL
Nominal Thread Size0.375 INCHES SINGLE MOUNTING FACILITY
Switch Actuator Positioning Increm30.0 DEGREES SINGLE ACTUATOR
Thread Length0.430 INCHES NOMINAL SINGLE MOUNTING FACILITY
First Flat Length0.250 INCHES NOMINAL SINGLE ACTUATOR
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL
Nonturn Device Radius0.432 INCHES NOMINAL AT 12:00 OCLOCK
Throw Quantity12 SINGLE SECTION FRONT
Nonturn Device TypeTAB AT 12:00 OCLOCK
Vendor Part Numbers66A73F17
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 27-1955 available?
We can source 27-1955 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 27-1955 by Janco Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 27-1955 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 27-1955?
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 27-1955?
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.