Boeing · Electronic Components
ST5M1501B21
Backshell, Electrical Connector
Part NumberST5M1501B21
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-137-5337 (NSN)
Federal Item NameBACKSHELL,ELECTRICAL CONNECTOR
Federal Supply Class5935 — Connectors, Electrical
Thread Series DesignatorUNEF
Cable Opening Diameter0.750 INCHES MAXIMUM
Nominal Thread Size1.188 INCHES
Thread Class2B
Thread Quantity Per Inch18
Distance From Centerline To Cable1.470 INCHES MAXIMUM
Overall Width1.200 INCHES MAXIMUM
MaterialALUMINUM ALLOY
Style DesignatorANGLE TYPE W/CLAMP
Surface TreatmentCADMIUM AND CHROMATE
Size Designation21
Vendor Part NumbersG7056-21NF, S1844-22R59D, 900-513R4120-55
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 ST5M1501B21 available?
We can source ST5M1501B21 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 ST5M1501B21 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST5M1501B21 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 ST5M1501B21?
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 ST5M1501B21?
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.