Northrop Grumman Systems · Electronic Components
138-121-0001
Resistor, Variable, Wire Wound, Pre
Part Number138-121-0001
ManufacturerNorthrop Grumman Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-940-7168 (NSN)
Federal Item NameRESISTOR,VARIABLE,WIRE WOUND,PRE
Federal Supply Class5905 — Resistors
Overall Length2.135 INCHES NOMINAL
Actuator TypeDUAL CONCENTRIC
Ambient Temp In Deg Celsius Per Se150.0 SINGLE SECTION
Body Diameter1.057 INCHES MINIMUM AND 1.067 INCHES MAXIMUM
Reliability IndicatorNOT ESTABLISHED
Shaft StyleROUND, FLATTED
Contact Arm Electrical Off PositioFULLY CCW
Overall Diameter1.203 INCHES MAXIMUM
Function Characteristic Per SectioSINGLE SECTION LINEAR
Function Conformity Per SectionSINGLE SECTION INDEPENDENT LINEARITY
Actuator Travel Control FeatureSTOPS
Vendor Part Numbers6213-14-2
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 138-121-0001 available?
We can source 138-121-0001 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 138-121-0001 by Northrop Grumman Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 138-121-0001 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 138-121-0001?
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 138-121-0001?
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.