MIL-SPEC · Electronic Components
UG-1904/U
Adapter, Waveguide
Part NumberUG-1904/U
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-169-7982 (NSN)
Federal Item NameADAPTER,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Coaxial Connector Series DesignatiN
Flange Depth0.875 INCHES NOMINAL SINGLE FLANGE
Flange Connecting Hole Diameter0.169 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES
Flange Outside Height1.688 INCHES NOMINAL SINGLE FLANGE
Flange Inside Height0.510 INCHES NOMINAL SINGLE FLANGE
Flange StyleCOVER TYPE SINGLE FLANGE
Flange Quantity1
Waveguide Outside Height0.638 INCHES NOMINAL
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Waveguide Inside Width1.020 INCHES NOMINAL
Insertion Loss In Decibels0.08
Vendor Part NumbersSMS 75104
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 UG-1904/U available?
We can source UG-1904/U 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 UG-1904/U by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If UG-1904/U 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 UG-1904/U?
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 UG-1904/U?
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.