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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-A-974511
Waveguide Assembly
Part NumberSM-A-974511
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-137-3766 (NSN)
Federal Item NameWAVEGUIDE ASSEMBLY
Federal Supply Class5985 — Antennas and Waveguides
Surface TreatmentCHROMATE ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
Thread Quantity Per Inch32 FIRST FLANGE ALL CONNECTION FACILITIES32 FIRST FLANGE ALL CONNECTION FACILITIES
Flange Quantity22
Waveguide Longer Offset Distance1.810 INCHES NOMINAL1.810 INCHES NOMINAL
Flange Outside Width1.860 INCHES MINIMUM AND 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM SECOND FLANGE1.890 INCHES MAXIMUM SECOND FLANGE
Flange Outside Height1.860 INCHES MINIMUM AND 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM SECOND FLANGE1.890 INCHES MAXIMUM SECOND FLANGE
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) FIRST FLANGE ALL CONNECTION FACILITIES
Waveguide Outside Width1.246 INCHES MINIMUM AND 1.246 INCHES MINIMUM AND 1.254 INCHES MAXIMUM1.254 INCHES MAXIMUM
Thread DirectionRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIESRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
Flange StyleCOVER TYPE SECOND FLANGE
Vendor Part Numbers112BE18-2
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 SM-A-974511 available?
We can source SM-A-974511 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 SM-A-974511 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-A-974511 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 SM-A-974511?
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 SM-A-974511?
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.