Sensor Systems, L.L.C. · Electronic Components
B491
Resistor, Variable, Nonwire Wound,
Part NumberB491
ManufacturerSensor Systems, L.L.C.
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-007-6253 (NSN)
Federal Item NameRESISTOR,VARIABLE,NONWIRE WOUND,
Federal Supply Class5905 — Resistors
Resistance Tolerance Per Section I-10.0 TO 10.0 SINGLE SECTION
Undercut Diameter0.125 INCHES NOMINAL
Rotary Actuator Travel In Angular360.0 NOMINAL
Shaft Length1.380 INCHES NOMINAL
Ambient Temp In Deg Celsius Per Se125.0 SINGLE SECTION
Pilot Length0.0620 INCHES NOMINAL
Terminal LocationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
Actuator Travel Control FeatureCONTINUOUS MOTION
Function Characteristic Per SectioSINGLE SECTION LINEAR
Shaft End Play0.005 INCHES
Pilot Diameter Runout0.001 INCHES
Vendor Part Numbers308-0037
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 B491 available?
We can source B491 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 B491 by Sensor Systems, L.L.C. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B491 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 B491?
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 B491?
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.