MIL-SPEC · Electronic Components
M55302/56B66
Connector, Receptacle, Electrical
Part NumberM55302/56B66
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-150-1721 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Federal Supply Class5935 — Connectors, Electrical
Polarization MethodJACKSCREW
Precious Material And Weight0.066 GOLD GRAINS, TROY
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Nominal Thread Size0.086 INCHES
Included Contact Quantity66 SINGLE MATING END SINGLE CONTACT GROUPING
Thread Quantity Per Inch56
Contact Surface Treatment DocumentMIL-G-45204,TY 2,GRADE C,CL 1 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290,CL 2 FED SPEC 2ND TREATMENT RESPONSE SINGLE
Contact Maximum Ac Voltage Rating1000.0 SINGLE MATING END SINGLE CONTACT GROUPING
Insert MaterialPLASTIC DIALLYL PHTHALATE SINGLE MATING END
Contact Material Document And ClasQQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-750 FED SPEC SINGLE M
Test Data Document81349-MIL-C-55302 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
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 M55302/56B66 available?
We can source M55302/56B66 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 M55302/56B66 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55302/56B66 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 M55302/56B66?
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 M55302/56B66?
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.