Keystone Electronics · Electronic Components
561
PLUG PHONO CONVENTIONAL TYPE BRS
Part Number561
ManufacturerKeystone Electronics
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-018-6423 (NSN)
Federal Item NameLEAD,TEST
Federal Supply Class6625 — Test Instruments
ColorBLACK FIRST POSITION COVER SINGLE CONDUCTOR
Eia Electron Tube Envelope AccommoT5 1/2
Mounting Facility Type And Quantit1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Tube Accommodated Maximum Height1.500 INCHES
Tube Envelope Accommodated Maximum0.688 INCHES
Style DesignatorHELIX SPRING HOLD DOWN WITH HOOK
Distance From Retainer Center To C0.469 INCHES NOMINAL
Surface TreatmentZINC
MaterialSTEEL
Unthreaded Mounting Hole Diameter0.132 INCHES NOMINAL SINGLE MOUNTING FACILITY
Overall Length0.973 INCHES NOMINAL
Overall Height1.875 INCHES NOMINAL
Vendor Part Numbers0S023555
Cancelled NSN5960-00-273-2429 (cancelled)
Impedance Rating In Ohms50.000 NOMINAL
Frequency Rating108.0 MEGAHERTZ MINIMUM AND 260.0 MEGAHERTZ MAXIMUM
Overall Diameter1.625 INCHES NOMINAL
Cable Entrance Diameter0.175 INCHES NOMINAL
Finger Length0.562 INCHES NOMINAL SINGLE FINGER
Finger TypeTEST PROD SINGLE FINGER
Terminal TypeSOLDER WELL
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 561 available?
We can source 561 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 561 by Keystone Electronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 561 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 561?
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 561?
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.