Boeing · Electronic Components
ST5M1291-B3
Connector, Receptacle, Electrical
Part NumberST5M1291-B3
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-149-5144 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Federal Supply Class5935 — Connectors, Electrical
Thread DirectionRIGHT-HAND
Thread Class2A
Contact Position Arrangement Style7-50 SINGLE MATING END
Mounting Facility Thickness0.360 INCHES NOMINAL
Distance From Mounting Shoulder To1.037 INCHES NOMINAL
Environmental ProtectionHERMETIC
Mating End Quantity1
Threaded Device TypeBACK SHELL AND MOUNTING BUSHING
Overall Length1.512 INCHES NOMINAL
Overall Diameter1.110 INCHES NOMINAL
Connector Locking MethodBAYONET PIN
Vendor Part Numbers18505, 10-599342-99P
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 ST5M1291-B3 available?
We can source ST5M1291-B3 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 ST5M1291-B3 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST5M1291-B3 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 ST5M1291-B3?
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 ST5M1291-B3?
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.