L3Harris Technologies · Electronic Components
127891-1
Waveguide Assembly
Part Number127891-1
ManufacturerL3Harris Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-116-3837 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Flange Outside Width1.875 INCHES NOMINAL SECOND FLANGE
Cross Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Nominal Thread Size0.164 INCHES SECOND FLANGE SINGLE CONNECTION FACILITY
Waveguide Inside Height0.497 INCHES NOMINAL
Flange Inside Height0.628 INCHES NOMINAL SECOND FLANGE
Flange Inside Width1.122 INCHES NOMINAL FIRST FLANGE
Flange Outside Height1.875 INCHES NOMINAL SECOND FLANGE
Waveguide Outside Width1.250 INCHES NOMINAL
Flange StyleCHOKE TYPE FIRST FLANGE
FSC Application DataMULTIAPPLICATION
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
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 127891-1 available?
We can source 127891-1 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 127891-1 by L3Harris Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 127891-1 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 127891-1?
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 127891-1?
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.