MIL-SPEC · Electronic Components
M287/3-49-0140
Waveguide Assembly
Part NumberM287/3-49-0140
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-313-8410 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Waveguide Length14.000 INCHES NOMINAL
Flange StyleCOVER TYPE SECOND FLANGE
Surface TreatmentSILVER SINGLE TUBING SEGMENT INSIDE SURFACES
Waveguide Inside Width0.6195 INCHES MINIMUM AND 0.6245 INCHES MAXIMUM
Nominal Thread Size0.138 INCHES FIRST FLANGE ALL CONNECTION FACILITIES
Flange Connecting Hole Diameter0.144 INCHES MINIMUM AND 0.147 INCHES MAXIMUM SECOND FLANGE ALL CONNECTION FACILITIES
Flange Depth0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM FIRST FLANGE
Flange Quantity2
Flange Connecting Facility And Qua4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES
Waveguide Outside Height0.388 INCHES MINIMUM AND 0.394 INCHES MAXIMUM
Flange Inside Width0.705 INCHES MINIMUM AND 0.707 INCHES MAXIMUM SECOND FLANGE
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 M287/3-49-0140 available?
We can source M287/3-49-0140 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 M287/3-49-0140 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M287/3-49-0140 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 M287/3-49-0140?
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 M287/3-49-0140?
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.