Boeing · Electronic Components
ST5M1291B1
Connector, Receptacle, Electrical
Part NumberST5M1291B1
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-039-8390 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Federal Supply Class5935 — Connectors, Electrical
Thread Class2A
Distance From Mounting Shoulder To0.640 INCHES MINIMUM AND 0.670 INCHES MAXIMUM
Mounting Facility Thickness0.300 INCHES NOMINAL
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Environmental ProtectionMOISTURE RESISTANT AND VIBRATION RESISTANT AND SALT WATER RESISTANT AND HERMETIC
Shell MaterialSTEEL CORROSION RESISTING
Nominal Thread Length0.315 INCHES
Precious Material And LocationCONTACT SURFACES GOLD
Overall Diameter1.110 INCHES MINIMUM AND 1.120 INCHES MAXIMUM
Mating End Quantity1
Overall Length1.165 INCHES MINIMUM AND 1.240 INCHES MAXIMUM
Vendor Part Numbers18503, 10-499492-05P
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 ST5M1291B1 available?
We can source ST5M1291B1 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 ST5M1291B1 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST5M1291B1 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 ST5M1291B1?
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 ST5M1291B1?
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.