Eaton Aerospace · Electronic Components
21C1-1-9
Switch, Pressure
Part Number21C1-1-9
ManufacturerEaton Aerospace
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-337-5063 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, BOTH POSITIONS MAINTAINED
Terminal TypeCONNECTOR, RECEPTACLE
Contact Action StimulusINCREASE
Contact Load Current Rating2.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Media For Which DesignedGAS
Style DesignatorCYLINDRICAL
Contact AdjustabilityACTUATION POINT NOT ADJUSTABLE AND DEACTUATION POINT NOT ADJUSTABLE
Outside Diameter0.438 INCHES NOMINAL SINGLE CONNECTION
Overall Diameter1.120 INCHES NOMINAL
Pressure Switch TypeDIFFERENTIAL
Width Across Flats0.688 INCHES NOMINAL
Vendor Part Numbers2335-127-17, 74B838001-117
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 21C1-1-9 available?
We can source 21C1-1-9 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 21C1-1-9 by Eaton Aerospace obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21C1-1-9 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 21C1-1-9?
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 21C1-1-9?
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.