Lockheed Martin Corporation · Electronic Components
721921
Resistor, Variable, Wire Wound, Non
Part Number721921
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-504-5460 (NSN)
Federal Item NameRESISTOR,VARIABLE,WIRE WOUND,NON
Federal Supply Class5905 — Resistors
Mounting Bushing Length0.250 INCHES NOMINAL
Actuator Travel Control FeatureSTOPS
Device Design TypeAT 9:00 OCLOCK LOCATION NOT OTHERWISE SPECIFIED
Fixed Tap Quantity Per Section1 SINGLE SECTION
Tap Location From Ccw Terminal Per250.0 SINGLE SECTION
Resistance Tolerance Per Section I-10.0 TO 10.0 SINGLE SECTION
Tap Location Tolerance Per Section-25.0 TO 25.0 OHMS SINGLE SECTION
Overall Diameter2.000 INCHES MAXIMUM
Shaft StyleROUND
Terminal Type And Quantity4 TAB, SOLDER LUG
Power Dissipation Rating Per Secti2.0 HEAT SINK SINGLE SECTION
Vendor Part Numbers83-5190
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 721921 available?
We can source 721921 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 721921 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 721921 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 721921?
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 721921?
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.