Krohn-Hite Corp. · Electronic Components
A2639
Resistor, Variable, Nonwire Wound,
Part NumberA2639
ManufacturerKrohn-Hite Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-763-4801 (NSN)
Federal Item NameRESISTOR,VARIABLE,NONWIRE WOUND,
Federal Supply Class5905 — Resistors
Shaft Diameter0.125 INCHES NOMINAL
Body Length0.391 INCHES NOMINAL
Reliability IndicatorNOT ESTABLISHED
Terminal LocationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE
Actuator Travel Control FeatureSTOPS
Screw Thread Diameter0.250 INCHES NOMINAL
Nonturn Device Radius0.375 INCHES NOMINAL
Electrical Resistance Per Section1.0 KILOHMS SINGLE SECTION
Device Design TypeNONTURN AT 9:00 OCLOCKUNABLE TO DECODE
Rotary Actuator Travel In Angular300.0 NOMINAL
Fragility FactorMODERATELY RUGGED
Vendor Part NumbersFM5878
Cross Sectional Diameter0.094 INCHES NOMINAL
Overall Length1.531 INCHES NOMINAL
Wall Thickness0.0319 INCHES NOMINAL
MaterialCOPPER ALLOY
Mounting ConfigurationTWO 0.116 IN. DIA HOLES 1.312 C TO C
ConstructionSOLID
Body Cross Sectional ShapeRECTANGULAR
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 A2639 available?
We can source A2639 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 A2639 by Krohn-Hite Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A2639 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 A2639?
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 A2639?
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.