Keysight Technologies Inc. · Electronic Components
K281C
Adapter, Waveguide
Part NumberK281C
ManufacturerKeysight Technologies Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-140-8122 (NSN)
Federal Item NameADAPTER,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Waveguide Outside Width0.500 INCHES NOMINAL
Waveguide Inside Height0.170 INCHES NOMINAL
Flange StyleCOVER TYPE SINGLE FLANGE
Waveguide Inside Width0.420 INCHES NOMINAL
Flange Connecting Hole Diameter0.116 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES
Flange Inside Width0.500 INCHES NOMINAL SINGLE FLANGE
Waveguide Outside Height0.250 INCHES NOMINAL
Flange Outside Height0.875 INCHES NOMINAL SINGLE FLANGE
Connector End DesignFEMALE
Adapter Height0.875 INCHES NOMINAL
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Vendor Part NumbersK-175-APC
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 K281C available?
We can source K281C 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 K281C by Keysight Technologies Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If K281C 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 K281C?
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 K281C?
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.