Joslyn Sunbank · Electronic Components
S577-20103-5A20
Backshell, Electrical Connector
Part NumberS577-20103-5A20
ManufacturerJoslyn Sunbank
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-00-243-5763 (NSN)
Federal Item NameBACKSHELL,ELECTRICAL CONNECTOR
Federal Supply Class5935 — Connectors, Electrical
Mounting Facility Type And Quantit1 THREADED COUPLING
Cable Opening Quantity1
Overall Width1.344 INCHES MINIMUM AND 1.406 INCHES MAXIMUM
Seal TypePREFORMED PACKING
Nominal Thread Size1.125 INCHES
Cable Opening Diameter0.500 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
Overall Length5.938 INCHES NOMINAL
Size Designation20
Overall Height1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM
Surface TreatmentANODIZE
Thread Series DesignatorUNEF
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 S577-20103-5A20 available?
We can source S577-20103-5A20 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 S577-20103-5A20 by Joslyn Sunbank obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If S577-20103-5A20 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 S577-20103-5A20?
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 S577-20103-5A20?
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.