MIL-SPEC · Electronic Components
M3786/4-0139
Switch, Rotary
Part NumberM3786/4-0139
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-451-5723 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
First Flat Length0.250 INCHES NOMINAL SINGLE ACTUATOR
Terminal TypeTAB, SOLDER LUG
Overall Length3.975 INCHES NOMINAL
Contact Load Current Rating75.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL
Hazardous Locations EnvironmentalEXPLOSION PROOF
Test Data Document81349-MIL-S-3786 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DAT
Contact Switching ActionBREAKS BEFORE MAKES EACH SECTION REAR
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR
Pole Quantity1 EACH SECTION FRONT
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Switch Actuator Positioning Increm30.0 DEGREES SINGLE 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 M3786/4-0139 available?
We can source M3786/4-0139 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 M3786/4-0139 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M3786/4-0139 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 M3786/4-0139?
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 M3786/4-0139?
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.