Janco · Electronic Components
87-1978
Switch, Rotary
Part Number87-1978
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-013-7287 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Flat Height0.220 INCHES NOMINAL FIRST ACTUATOR
Overall Diameter1.100 INCHES NOMINAL
Rotor Through Connection Quantity3 SINGLE SECTION
Overall Length3.330 INCHES NOMINAL
Thread Series DesignatorUNEF SINGLE MOUNTING FACILITY
Shaft Length0.500 INCHES NOMINAL FIRST ACTUATOR
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
First Flat Length0.380 INCHES NOMINAL FIRST ACTUATOR
Terminal TypeTAB, SOLDER LUG
Contact Switching ActionMAKES BEFORE BREAKS SINGLE SECTION REAR
Switch Actuator Positioning Increm30.0 DEGREES FIRST ACTUATOR
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 87-1978 available?
We can source 87-1978 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 87-1978 by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 87-1978 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 87-1978?
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 87-1978?
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.