MIL-SPEC · Electronic Components
M81659-21B1-0052
Connector, Receptacle, Electrical
Part NumberM81659-21B1-0052
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-030-6251 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Federal Supply Class5935 — Connectors, Electrical
Body StyleSTRAIGHT SHAPE
Distance Between Centerlines Of Mo1.435 INCHES MINIMUM AND 1.439 INCHES MAXIMUM
Environmental ProtectionHUMIDITY RESISTANT AND SHOCK PROOF AND SALT WATER RESISTANT AND VIBRATION RESISTANT
Thread Class2B
Mating End Quantity2
Thread DirectionRIGHT-HAND
Center To Center Distance Between2.782 INCHES MINIMUM AND 2.786 INCHES MAXIMUM
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Overall Height3.105 INCHES MINIMUM AND 3.115 INCHES MAXIMUM
Shell Surface TreatmentCADMIUM
Polarization Method2 POLARIZATION POSTS
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 M81659-21B1-0052 available?
We can source M81659-21B1-0052 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 M81659-21B1-0052 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M81659-21B1-0052 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 M81659-21B1-0052?
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 M81659-21B1-0052?
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.