Lockheed Martin Corp. · Electronic Components
740544-101
Switch, Toggle
Part Number740544-101
ManufacturerLockheed Martin Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-070-1866 (NSN)
Federal Item NameSWITCH,TOGGLE
Federal Supply Class5930 — Switches
Contact Load Current Rating At Max20.000 AMPERES RESISTIVE DC AND 12.000 AMPERES INDUCTIVE DC AND 5.000 AMPERES LAMP DC AND 15.000 AMPERES RESISTIVE AC AN
Thread Series DesignatorUNS
Body Length1.340 INCHES MAXIMUM
Nonpile Up Contact Arrangement4 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
Criticality Code JustificationFEAT
Terminal Type And Quantity12 SCREW
Maximum Voltage Rating In Volts115.0 AC AND 28.0 DC
Thread Quantity Per Inch32
Actuator Position Action RelationsUP POSITION MAINTAINED AND DOWN POSITION MAINTAINED
Actuator Diameter0.405 INCHES MINIMUM AND 0.435 INCHES MAXIMUM
Actuator StyleROUND
Vendor Part Numbers4TL149-3D
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 740544-101 available?
We can source 740544-101 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 740544-101 by Lockheed Martin Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 740544-101 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 740544-101?
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 740544-101?
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.