Lockheed Martin · Electronic Components
1213777-303
Waveguide Assembly
Part Number1213777-303
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-408-5284 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Waveguide Length78.500 INCHES NOMINAL
MaterialALUMINUM ALL TUBING SEGMENT AND FLANGE
Style DesignatorSTRAIGHT TYPE
FlexibilityRIGID SINGLE TUBING SEGMENT
Waveguide Outside Height1.854 INCHES MINIMUM AND 1.866 INCHES MAXIMUM
Flange Quantity2
Flange Inside Width2.834 INCHES MINIMUM AND 2.846 INCHES MAXIMUM FIRST FLANGE
Flange Depth1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM FIRST FLANGE
Waveguide Inside Height1.334 INCHES MINIMUM AND 1.346 INCHES MAXIMUM
Flange StyleCHOKE TYPE FIRST FLANGE
Cross Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
ESD/EMICode A — 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 1213777-303 available?
We can source 1213777-303 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 1213777-303 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1213777-303 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 1213777-303?
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 1213777-303?
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.