Waveline Inc. · Electronic Components
643
Waveguide Assembly
Part Number643
ManufacturerWaveline Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-551-1309 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Flange Outside Height1.625 INCHES NOMINAL FIRST FLANGE
Flange Depth0.438 INCHES NOMINAL FIRST FLANGE
Flange Inside Height0.400 INCHES NOMINAL FIRST FLANGE
Waveguide Outside Height0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM
Nominal Thread Size0.164 INCHES FIRST FLANGE ALL CONNECTION FACILITIES
Flange Inside Width1.005 INCHES NOMINAL SECOND FLANGE
Waveguide Inside Height0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM
FSC Application DataANTENNAS,WAVEGUIES,AND RELATED EQUIPMENT
Thread Class2B FIRST FLANGE ALL CONNECTION FACILITIES
Waveguide Outside Width0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM
Waveguide Inside Width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM
Body Length7.000 INCHES NOMINAL
Body Width2.031 INCHES NOMINAL
Output Impedance Per Function W So600.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Reference Frequency Per Function1.105 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Mounting Facility Type And Quantit2 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
Frequency Band Width Per Function1.0625 KILOHERTZ BLANK AND 1.1475 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Inclosure TypeENCASED
Mounting Facility Screw Thread SerUNIFIED NATIONAL COARSE (UNC)
Input Impedance Per Function W Loa600.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Body Height0.813 INCHES NOMINAL
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 643 available?
We can source 643 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 643 by Waveline Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 643 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 643?
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 643?
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.