Keystone Electronics · Electronic Components
3131
WASHER FLAT #10 .196X.500" FIBRE
Part Number3131
ManufacturerKeystone Electronics
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-018-2621 (NSN)
Federal Item NameCOUPLER,ROTARY,RADIO FREQUENCY
Federal Supply Class5985 — Antennas and Waveguides
Input Impedance Rating In Ohms50.0
Unit TypeCOAXIAL LINE
Mounting ConfigurationEIGHT 0.136 IN. DIA MTG HOLES ON 3.343 IN. DIA B C
Radio Frequency Rating990.0 MEGAHERTZ MINIMUM AND 1130.0 MEGAHERTZ MAXIMUM
MaterialCOPPER
Overall Diameter3.620 INCHES NOMINAL
Output Impedance Rating In Ohms150.0
Overall Length2.630 INCHES NOMINAL
Vendor Part Numbers36-2120-0, 635A103H01
Output Current TypeAC
Overall Height5.250 INCHES NOMINAL
Input Voltage Rating In Volts105.0 MINIMUM AND 125.0 MAXIMUM
Input Frequency Rating In Hertz60.0 NOMINAL
Regulation Percent0.01
Operating Temp Range+0.0 TO 50.0 CELSIUS
Electronic Device TypeSOLID STATE
Input Current TypeAC
Input PhaseSINGLE
Regulation MethodELECTRONIC
Enclosure FeatureENVIRONMENTAL PROOF
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 3131 available?
We can source 3131 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 3131 by Keystone Electronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3131 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 3131?
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 3131?
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.