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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-A-878431-3
Backshell, Electrical Connector
Part NumberSM-A-878431-3
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-072-1452 (NSN)
Federal Item NameBACKSHELL,ELECTRICAL CONNECTOR
Federal Supply Class5935 — Connectors, Electrical
Distance From Centerline To Cable3.750 INCHES MAXIMUM
Nominal Thread Size1.438 INCHES
Thread Quantity Per Inch18
Cable Opening Quantity1
Mounting Facility Type And Quantit1 THREADED COUPLING
MaterialALUMINUM ALLOY
Thread Series DesignatorUNEF
Surface TreatmentCADMIUM AND CHROMATE AND NICKEL
Style DesignatorANGLE TYPE W/CLAMP
Cable Opening Diameter0.719 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
Overall Width1.719 INCHES MAXIMUM
Vendor Part NumbersS1778-2807-34E
ESD/EMICode A — ESD/EMI sensitive item
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-878431-3 available?
We can source SM-A-878431-3 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-878431-3 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-878431-3 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-878431-3?
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-878431-3?
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.