Wells Mfg Corp. Sub Of Uis Inc. · Electronic Components
F490
Relay, Electromagnetic
Part NumberF490
ManufacturerWells Mfg Corp. Sub Of Uis Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-257-8907 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Coil Quantity1
Winding Dc Resistance Rating1.21 OHMS MINIMUM AND 1.28 OHMS MAXIMUM SINGLE WINDING
Overall Length3.375 INCHES NOMINAL
Nominal Operating Current Rating A4.8 AMPERES DC SINGLE WINDING
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY
Overall Height2.406 INCHES NOMINAL
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Winding Quantity1
Duty TypeINTERMITTENT
Center To Center Distance Between2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY
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 F490 available?
We can source F490 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 F490 by Wells Mfg Corp. Sub Of Uis Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If F490 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 F490?
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 F490?
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.