Boeing · Electronic Components
ST5M1491-001
Switch, Lock
Part NumberST5M1491-001
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-123-8578 (NSN)
Federal Item NameSWITCH,LOCK
Federal Supply Class5930 — Switches
Nonpile Up Contact Arrangement2 POLE, DOUBLE THROW, DOUBLE BREAK/DOUBLE MAKE, PERMANENT JUMPER, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
Terminal Type And Quantity8 TAB W/SCREW
Contact Load Current Rating At Max550.000 MILLIAMPERES RESISTIVE DC AND 1.200 AMPERES RESISTIVE AC
Inclosure TypeFULLY INCLOSED
Maximum Voltage Rating In Volts600.0 AC AND 250.0 DC
Overall Length4.125 INCHES NOMINAL
Body StyleHOLE MOUNTED
Overall Width2.250 INCHES NOMINAL
Bushing Length1.203 INCHES NOMINAL
Body Width2.250 INCHES NOMINAL
Body Length1.781 INCHES NOMINAL
Vendor Part NumbersPTKBC2221C
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 ST5M1491-001 available?
We can source ST5M1491-001 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 ST5M1491-001 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST5M1491-001 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 ST5M1491-001?
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 ST5M1491-001?
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.