MIL-SPEC · Electronic Components
M5757/1-021
Relay, Electromagnetic
Part NumberM5757/1-021
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-874-0602 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Overall Length1.880 INCHES MAXIMUM
Test Data Document81349-MIL-R-5757 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DAT
Time Delay0.015 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
Storage TypeGENERAL PURPOSE WAREHOUSE
Operating Voltage Rating And Type26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Purpose For Which DesignedGENERAL
Fragility FactorMODERATELY RUGGED
Main Contact Load Current Rating A2.0 AMPERES DC RESISTIVE LOAD
Unthreaded Mounting Hole Diameter0.152 INCHES NOMINAL SINGLE MOUNTING FACILITY
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Center To Center Distance Between1.562 INCHES NOMINAL SINGLE MOUNTING FACILITY
Cancelled NSN5945-00-080-8198 (cancelled)
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 M5757/1-021 available?
We can source M5757/1-021 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 M5757/1-021 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M5757/1-021 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 M5757/1-021?
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 M5757/1-021?
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.