MIL-SPEC · Electronic Components
UG-559B/U
Adapter, Connector
Part NumberUG-559B/U
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-00-617-9887 (NSN)
Federal Item NameADAPTER,CONNECTOR
Federal Supply Class5935 — Connectors, Electrical
Threaded Device TypeCOUPLING FACILITY
Thread Class2A
Body StyleANGLE SHAPE, EXTERNAL/INTERNAL COUPLING
Test Data Document81349-MIL-A-27434 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Contact Surface Treatment DocumentQQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE ALL MATING ENDS SINGLE CONTACT GROUPING
Contact Surface TreatmentSILVER ALL MATING ENDS SINGLE CONTACT GROUPING
Precious MaterialSILVER
Included Contact TypeCOAXIAL PIN FIRST MATING END SINGLE CONTACT GROUPING
Insert MaterialPLASTIC ALL MATING ENDS
Connector Locking MethodBAYONET LATCH AND EXTERNALLY THREADED SHELL
Thread Series DesignatorUNEF
Cancelled NSN5935-00-617-7497 (cancelled)
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 UG-559B/U available?
We can source UG-559B/U 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 UG-559B/U by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If UG-559B/U 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 UG-559B/U?
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 UG-559B/U?
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.