Us Army Aviation And Missile Command · Electronic Components
9178657
Waveguide Assembly
Part Number9178657
ManufacturerUs Army Aviation And Missile Command
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-819-4481 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Nominal Thread Size0.138 INCHES FIRST FLANGE ALL CONNECTION FACILITIES
Flange Connecting Facility And Qua4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES
Waveguide Longer Offset Distance1.750 INCHES NOMINAL
Flange Quantity2
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIP.
Flange Connecting Hole Diameter0.157 INCHES MINIMUM AND 0.166 INCHES MAXIMUM SECOND FLANGE ALL CONNECTION FACILITIES
Thread Class2B FIRST FLANGE ALL CONNECTION FACILITIES
FlexibilityRIGID SINGLE TUBING SEGMENT
Voltage Standing Wave Ratio1.08
Thread DirectionRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
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 9178657 available?
We can source 9178657 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 9178657 by Us Army Aviation And Missile Command obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 9178657 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 9178657?
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 9178657?
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.