Custom Control Sensors · Electronic Components
644A-3
Switch, Pressure
Part Number644A-3
ManufacturerCustom Control Sensors
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-076-0111 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Style DesignatorCYLINDRICAL
Body Length3.500 INCHES MAXIMUM
Pressure Switch TypeABSOLUTE
Media For Which DesignedGAS, LIQUEFIED
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Unthreaded Mounting Hole Diameter0.210 INCHES NOMINAL
Overall Length3.900 INCHES NOMINAL
Terminal TypeTHREADED STUD
Mounting Facility PatternTHREE POSITION CIRCULAR
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Mounting MethodUNTHREADED HOLE(S)
Vendor Part Numbers8267104-1
Cancelled NSN5930-00-964-9941 (cancelled)
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 644A-3 available?
We can source 644A-3 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 644A-3 by Custom Control Sensors obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 644A-3 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 644A-3?
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 644A-3?
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.