MIL-SPEC · Electronic Components
M287/4-46-0240
Waveguide Assembly
Part NumberM287/4-46-0240
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-134-5398 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Flange Depth0.437 INCHES NOMINAL ALL FLANGES
Flange Outside Width1.625 INCHES NOMINAL ALL FLANGES
Insertion Loss In Decibels10.00
Flange Inside Width1.062 INCHES NOMINAL ALL FLANGES
Flange Outside Height1.625 INCHES NOMINAL ALL FLANGES
Waveguide Outside Width1.000 INCHES NOMINAL
Cross Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Waveguide Inside Width0.900 INCHES NOMINAL
Voltage Standing Wave Ratio1.10
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Flange Connecting Hole Diameter0.169 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY
Cancelled NSN5985-00-263-0820 (cancelled)
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 M287/4-46-0240 available?
We can source M287/4-46-0240 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 M287/4-46-0240 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M287/4-46-0240 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 M287/4-46-0240?
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 M287/4-46-0240?
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.