Harwil · Electronic Components
Q-4E/2
Switch, Flow
Part NumberQ-4E/2
ManufacturerHarwil
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-616-4299 (NSN)
Federal Item NameSWITCH,FLOW
Federal Supply Class5930 — Switches
Contact Action StimulusINCREASE
Overall Width3.9375 INCHES NOMINAL
Mounting MethodINLET CONNECTION
Overall Height4.0625 INCHES NOMINAL
Body Length4.1875 INCHES NOMINAL
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, BOTH POSITIONS MAINTAINED
Terminal TypeCONNECTOR, RECEPTACLE
Overall Length4.875 INCHES NOMINAL
Contact Adjustment TypeEXTERNAL ACTUATION POINT SCREW
Contact Adjustment Range+6.0 TO 20.0 ACTUATION POINT GALLONS PER MINUTE
Media For Which DesignedLIQUID
Vendor Part NumbersH350290-109
ESD/EMICode A — ESD/EMI sensitive item
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 Q-4E/2 available?
We can source Q-4E/2 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 Q-4E/2 by Harwil obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If Q-4E/2 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 Q-4E/2?
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 Q-4E/2?
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.