Janco · Electronic Components
4-1900M
Switch, Rotary
Part Number4-1900M
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-213-0314 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Individual Section Quantity3
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL
Overall Diameter1.100 INCHES NOMINAL
Nonturn Device TypeTAB AT 3:00 OCLOCK
Nominal Thread Size0.375 INCHES SINGLE MOUNTING FACILITY
Nonturn Device Radius0.375 INCHES NOMINAL AT 3:00 OCLOCK
Overall Length2.554 INCHES NOMINAL
Features ProvidedRFI SHIELDING
Switch Actuator Positioning Increm30.0 DEGREES SINGLE ACTUATOR
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR
Thread Length0.437 INCHES NOMINAL SINGLE MOUNTING FACILITY
Vendor Part Numbers4-1900M-3-4NPD
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 4-1900M available?
We can source 4-1900M 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 4-1900M by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4-1900M 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 4-1900M?
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 4-1900M?
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.