MIL-SPEC · Electronic Components
MS27721-21A
Switch, Toggle
Part NumberMS27721-21A
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-405-3951 (NSN)
Federal Item NameSWITCH,TOGGLE
Federal Supply Class5930 — Switches
Actuator Position Action RelationsUP POSITION MAINTAINED AND DOWN POSITION MAINTAINED AND CENTER POSITION MAINTAINED
Body Height0.730 INCHES MAXIMUM
Test Data Document81349-MIL-DTL-83731 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE
Body Width0.535 INCHES MAXIMUM
Actuator Diameter0.428 INCHES NOMINAL
Body StyleBUSHING MOUNT
Thread Series DesignatorUNS
Contact Load Current Rating At Max5.000 AMPERES RESISTIVE DC AND 2.000 AMPERES INDUCTIVE DC AND 1.000 AMPERES LAMP DC AND 5.000 AMPERES RESISTIVE AC AND 2
Nominal Thread Size0.469 INCHES
Features ProvidedACTUATOR SEAL
Nonpile Up Contact Arrangement2 POLE, DOUBLE THROW, THREE POSITIONS MAINTAINED SINGLE SWITCH UNIT
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 MS27721-21A available?
We can source MS27721-21A 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 MS27721-21A by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MS27721-21A 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 MS27721-21A?
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 MS27721-21A?
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.