G General Electro-Components · Electronic Components
MK503A120
Relay, Electromagnetic
Part NumberMK503A120
ManufacturerG General Electro-Components
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-01-122-4199 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Precious Material And LocationCONTACTS SILVER
Overall Length1.671 INCHES NOMINAL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Overall Height1.520 INCHES NOMINAL
Main Contact Load Current Rating A20.0 AMPERES AC RESISTIVE LOAD
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Mounting Facility Type And Quantit1 THREADED STUD(S) SINGLE MOUNTING FACILITY
Precious MaterialSILVER
Thread DirectionRIGHT-HAND SINGLE MOUNTING FACILITY
Terminal Type And Quantity11 QUICK DISCONNECT, MALE ALL FUNCTIONS
Overall Width1.600 INCHES MAXIMUM
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 MK503A120 available?
We can source MK503A120 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 MK503A120 by G General Electro-Components obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MK503A120 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 MK503A120?
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 MK503A120?
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.