Aeromaritime Systembau · Electronic Components
178.138-4
Adapter, Connector
Part Number178.138-4
ManufacturerAeromaritime Systembau
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-00-259-0205 (NSN)
Federal Item NameADAPTER,CONNECTOR
Federal Supply Class5935 — Connectors, Electrical
Threaded Device TypeCOUPLING FACILITY
Precious MaterialGOLD AND SILVER
Contact Surface Treatment DocumentMIL-G-45204,TYPE 1,CLASS 2,GRADE C MIL SPEC SINGLE TREATMENT RESPONSE ALL MATING ENDS SINGLE CONTACT GROUPING
Nominal Thread Size0.625 INCHES
Included Contact Quantity1 ALL MATING ENDS SINGLE CONTACT GROUPING
Test Data Document81349-MIL-PRF-55339 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE
Contact Maximum Frequency Rating4.0 GIGAHERTZ ALL MATING ENDS SINGLE CONTACT GROUPING
Operating Temp Rating-65.0 CELSIUS MINIMUM AND 165.0 CELSIUS MAXIMUM
Included Contact TypeCOAXIAL SOCKET FIRST MATING END SINGLE CONTACT GROUPING
Insert MaterialPLASTIC FLUORINATED ETHYLENE PROPYLENE OR PLASTIC POLYTETRAFLUOROETHYLENE ALL MATING ENDS
Shell MaterialCOPPER ALLOY
Vendor Part Numbers5M.4584.220.24, M55339/20-00201
Cancelled NSN5935-01-420-9360 (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 178.138-4 available?
We can source 178.138-4 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 178.138-4 by Aeromaritime Systembau obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 178.138-4 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 178.138-4?
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 178.138-4?
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.