Lockheed Martin · Electronic Components
668440-1
Switch, Pressure
Part Number668440-1
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-711-5958 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Operating Temp Rating-65.0 FAHRENHEIT MINIMUM AND 275.0 FAHRENHEIT MAXIMUM
Width Across Flats1.500 INCHES NOMINAL
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Contact Voltage Rating In Volts27.0 DC AT SEA LEVEL SINGLE VOLTAGE
Sensing Element Burst Pressure7500.00 POUNDS PER SQUARE INCH
Inside Diameter0.250 INCHES NOMINAL SINGLE CONNECTION
Contact Stimulus Rating1109.00 DEACTUATION POINT MINIMUM POUNDS PER SQUARE INCH
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Style DesignatorCYLINDRICAL
Pressure Connector TypePLAIN, UNTHREADED INTERNAL SINGLE CONNECTION
Mounting MethodCLAMP
Vendor Part Numbers15374
Cancelled NSN5930-00-642-9402 (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 668440-1 available?
We can source 668440-1 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 668440-1 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 668440-1 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 668440-1?
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 668440-1?
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.