MIL-SPEC · Electronic Components
RV4LAYSA251B
Resistor, Variable, Nonwire Wound,
Part NumberRV4LAYSA251B
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-556-5189 (NSN)
Federal Item NameRESISTOR,VARIABLE,NONWIRE WOUND,
Federal Supply Class5905 — Resistors
Shaft Diameter0.250 INCHES NOMINAL
Resistance Tolerance Per Section I-20.0 TO 20.0 SINGLE SECTION
Power Dissipation Rating Per Secti2.0 FREE AIR SINGLE SECTION
Terminal Type And Quantity3 TAB, SOLDER LUG
Mounting MethodSTANDARD BUSHING
Nonturn Device Radius0.531 INCHES NOMINAL
Screw Thread Quantity Per Inch32.0
Device Design TypeERR-030 AT 9:00 OCLOCKUNABLE TO DECODE
Screw Thread Series DesignatorUNEF
Electrical Resistance Per Section250.000 OHMS SINGLE SECTION
Screw Thread Diameter0.375 INCHES NOMINAL
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 RV4LAYSA251B available?
We can source RV4LAYSA251B 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 RV4LAYSA251B by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RV4LAYSA251B 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 RV4LAYSA251B?
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 RV4LAYSA251B?
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.