Microwave Engineering · Electronic Components
P40-203-2
Adapter, Waveguide
Part NumberP40-203-2
ManufacturerMicrowave Engineering
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-324-0179 (NSN)
Federal Item NameADAPTER,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Nominal Thread Size0.138 INCHES SINGLE FLANGE ALL CONNECTION FACILITIES
Thread DirectionRIGHT-HAND SINGLE FLANGE ALL CONNECTION FACILITIES
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
FSC Application DataRADAR EQUIPMENT
Style DesignatorWAVEGUIDE TO COAXIAL
Flange Depth0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM SINGLE FLANGE
Flange Inside Diameter0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM SINGLE FLANGE
Adapter Length0.800 INCHES MINIMUM AND 1.200 INCHES MAXIMUM
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE FLANGE ALL CONNECTION FACILITIES
Waveguide Inside Height0.3085 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM
Surface TreatmentCHROMATE SINGLE TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
Vendor Part Numbers988753-3
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 P40-203-2 available?
We can source P40-203-2 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 P40-203-2 by Microwave Engineering obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If P40-203-2 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 P40-203-2?
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 P40-203-2?
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.