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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-A-18643
Switch, Pressure
Part NumberSM-A-18643
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-124-9963 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Body Length2.124 INCHES NOMINAL
Contact Action StimulusINCREASE
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
Terminal TypeCONNECTOR, RECEPTACLE
Overall Diameter1.484 INCHES MINIMUM AND 1.516 INCHES MAXIMUM
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL FIRST VOLTAGE
Pressure Connector TypePLAIN, THREADED INTERNAL SINGLE CONNECTION
Inside Diameter0.125 INCHES NOMINAL SINGLE CONNECTION
Mounting MethodINLET CONNECTION
Nominal Thread Size0.125 INCHES SINGLE PRESSURE CONNECTION
Media For Which DesignedLIQUID
Vendor Part Numbers6607A-4-47
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 SM-A-18643 available?
We can source SM-A-18643 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 SM-A-18643 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-A-18643 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 SM-A-18643?
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 SM-A-18643?
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.