Boeing · Electronic Components
ST5M1491-302
Switch, Lock
Part NumberST5M1491-302
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-115-4254 (NSN)
Federal Item NameSWITCH,LOCK
Federal Supply Class5930 — Switches
Overall Length3.170 INCHES NOMINAL
Body StyleBUSHING MOUNTED
Contact Load Current Rating At Max10.000 AMPERES RESISTIVE DC AND 5.000 AMPERES INDUCTIVE DC
Nonpile Up Contact Arrangement2 TWO CIRCUIT, TWO POSITIONS MOMENTARY SINGLE SWITCH UNIT
Terminal Type And Quantity8 SCREW
Thread Series DesignatorUNS
Mounting MethodTHREADED BUSHING
Body Width1.860 INCHES NOMINAL
Bushing Length0.600 INCHES NOMINAL
Overall Height1.960 INCHES NOMINAL
Inclosure TypeFULLY INCLOSED
Vendor Part NumbersPTKBC2232C
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 ST5M1491-302 available?
We can source ST5M1491-302 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 ST5M1491-302 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST5M1491-302 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 ST5M1491-302?
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 ST5M1491-302?
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.