Amphenol · Electronic Components
MS3451W20-4S
CONN RCPT 4POS CBL MNT W/SCKT
Part NumberMS3451W20-4S
ManufacturerAmphenol
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-235-4022 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Terminal TypeCRIMP SINGLE MATING END SINGLE CONTACT GROUPING
Overall Length2.125 INCHES MAXIMUM
Overall Diameter1.443 INCHES MINIMUM AND 1.505 INCHES MAXIMUM
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Precious MaterialGOLD
Precious Material LocationCONTACT SURFACES GOLD
Nominal Thread Size1.312 INCHES AND 1.375 INCHES
Contact Arrangement20-4 SINGLE MATING END
Included Contact Quantity4 SINGLE MATING END SINGLE CONTACT GROUPING
Thread DirectionRIGHT-HAND
Federal Supply Class5935 — Connectors, Electrical
Thread Class2A
Threaded Device TypeBACK SHELL AND COUPLING FACILITY
Mating End Quantity1
Contact Surface TreatmentGOLD SINGLE MATING END SINGLE CONTACT GROUPING
Shell Surface Treatment Document AQQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES
Environmental ProtectionMOISTURE PROOF AND SALT WATER RESISTANT AND VIBRATION PROOF
Connector Locking MethodEXTERNALLY THREADED SHELL
Cancelled NSN5935-00-197-3886 (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 MS3451W20-4S available?
We can source MS3451W20-4S 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 MS3451W20-4S by Amphenol obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MS3451W20-4S 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 MS3451W20-4S?
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 MS3451W20-4S?
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.