Ohmite Holding, L.L.C. · Electronic Components
W4191
Resistor, Variable, Wire Wound, Non
Part NumberW4191
ManufacturerOhmite Holding, L.L.C.
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-250-7787 (NSN)
Federal Item NameRESISTOR,VARIABLE,WIRE WOUND,NON
Federal Supply Class5905 — Resistors
Power Dissipation Rating Per Secti12.5 FREE AIR SINGLE SECTION
Shaft Length0.625 INCHES NOMINAL
Device Design TypeAT 6:00 OCLOCK LOCATION NOT OTHERWISE SPECIFIED
Shaft StyleROUND
Body Length0.688 INCHES NOMINAL
Ambient Temp In Deg Celsius Per Se40.0 SINGLE SECTION
Electrical Resistance Per Section10.0 KILOHMS SINGLE SECTION
Screw Thread Diameter0.250 INCHES NOMINAL
Screw Thread Series DesignatorUNEF
Nonturn Device Radius0.250 INCHES NOMINAL
Actuator TypeSINGLE SHAFT
Vendor Part Numbers54498-100000HMS
ESD/EMICode B — 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 W4191 available?
We can source W4191 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 W4191 by Ohmite Holding, L.L.C. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If W4191 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 W4191?
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 W4191?
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.