Henry G Dietz · Electronic Components
540A-D-3
Switch, Pressure
Part Number540A-D-3
ManufacturerHenry G Dietz
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-172-6437 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Outside Diameter0.375 INCHES NOMINAL SINGLE CONNECTION
Mounting Facility PatternFOUR POSITION RECTANGULAR
Pressure Switch TypeABSOLUTE
Nominal Thread Size0.375 INCHES SINGLE PRESSURE CONNECTION
Contact Adjustment TypeEXTERNAL ACTUATION POINT HEX NUT
Longest Horizontal Distance Betwee5.062 INCHES NOMINAL
Unthreaded Mounting Hole Diameter0.170 INCHES NOMINAL
Contact AdjustabilityACTUATION POINT ADJUSTABLE
Longest Vertical Distance Between6.062 INCHES NOMINAL
Overall Width5.500 INCHES NOMINAL
Style DesignatorRECTANGULAR W/BRACKET
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 540A-D-3 available?
We can source 540A-D-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 540A-D-3 by Henry G Dietz obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 540A-D-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 540A-D-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 540A-D-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.