Lockheed Martin Corporation · Electronic Components
5665681
Adapter, Waveguide
Part Number5665681
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-615-9766 (NSN)
Federal Item NameADAPTER,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Flange Connecting Hole Diameter0.219 INCHES MINIMUM AND 0.222 INCHES MAXIMUM SINGLE FLANGE ALL CONNECTION FACILITIES
Connector End DesignFEMALE
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Waveguide Inside Height0.872 INCHES NOMINAL
Adapter Diameter3.250 INCHES NOMINAL
Flange Inside Height1.000 INCHES NOMINAL SINGLE FLANGE
Waveguide Outside Width2.000 INCHES NOMINAL
Coaxial Connector Series DesignatiN
Waveguide Inside Width1.872 INCHES NOMINAL
Flange StyleCOVER TYPE SINGLE FLANGE
MaterialALUMINUM SINGLE FLANGE
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 5665681 available?
We can source 5665681 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 5665681 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 5665681 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 5665681?
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 5665681?
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.