Souriau, Inc. · Electronic Components
D38999/20WB4SN
MIL-DTL-38999 Series III wall-mount receptacle, insert arrangement 4, socket contacts — circular aerospace connector
Part NumberD38999/20WB4SN
ManufacturerSouriau, Inc.
AvailabilityIn stock — ships fast
Specifications
NSN5935-01-523-6398 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Terminal TypeCRIMP SINGLE MATING END SINGLE CONTACT GROUPING
Overall Length31.5 MILLIMETERS NOMINAL
Overall Width26.2 MILLIMETERS NOMINAL
Overall Height26.2 MILLIMETERS NOMINAL
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Precious MaterialGOLD
Precious Material LocationCONTACT SURFACES GOLD
Special FeaturesCONTACTS PER MIL-C-39029/56-351, FURNISHED ITEMS- SPARE CONTACT AND PROTECTIVE COVER AND INSERTION-EXTRACTION TOOL
Contact Arrangement11-4 SINGLE MATING END
Included Contact Quantity4 SINGLE MATING END SINGLE CONTACT GROUPING
Federal Supply Class5935 — Connectors, Electrical
Distance From Mounting Shoulder To19.5 MILLIMETERS NOMINAL
Distance Between Centerlines Of Mo18.2 MILLIMETERS MINIMUM AND 20.6 MILLIMETERS MAXIMUM
Mating End Quantity1
Center To Center Distance Between18.2 MILLIMETERS MINIMUM AND 20.6 MILLIMETERS MAXIMUM
Environmental ProtectionCORROSION RESISTANT AND FUNGUS RESISTANT AND MOISTURE RESISTANT AND SALT SPRAY PROOF AND SHOCK RESISTANT AND VIBRATION R
Connector Locking MethodEXTERNALLY THREADED SHELL
Insert Position In Deg0.0 AND 124.0 AND 152.0 AND 219.0 AND 265.0
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 D38999/20WB4SN in stock?
Yes — D38999/20WB4SN is in our stock database. Request a quote for current pricing and lead time.
Is D38999/20WB4SN by Souriau, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If D38999/20WB4SN 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 D38999/20WB4SN?
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 D38999/20WB4SN?
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.