Lockheed Martin · Electronic Components
EEP1661-121
Waveguide Assembly
Part NumberEEP1661-121
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-141-5971 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Waveguide Inside Height0.3085 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM
Waveguide Longer Offset Distance6.000 INCHES NOMINAL
Thread DirectionRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
Flange Inside Height0.309 INCHES MINIMUM AND 0.313 INCHES MAXIMUM FIRST FLANGE
Flange Inside Width0.620 INCHES MINIMUM AND 0.624 INCHES MAXIMUM FIRST FLANGE
Flange Depth0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM FIRST FLANGE
Waveguide Outside Width0.699 INCHES MINIMUM AND 0.705 INCHES MAXIMUM
Flange Outside Height1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM SECOND FLANGE
Waveguide Inside Width0.6195 INCHES MINIMUM AND 0.6245 INCHES MAXIMUM
FlexibilityRIGID SINGLE TUBING SEGMENT
Surface TreatmentSILVER ALL FLANGE INSIDE SURFACES
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 EEP1661-121 available?
We can source EEP1661-121 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 EEP1661-121 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If EEP1661-121 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 EEP1661-121?
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 EEP1661-121?
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.