2026-09-03 16:26:35
Many design engineers and procurement staff often struggle to decode J599 circular connector part numbers. Every character within this model code carries technical details, and knowing what each section means saves time when selecting connectors for your projects.
J599 part numbers are split into several sections. The initial digits show the base series, then shell form. Mark “20” represents wall mount receptacle, and “26” is shielded plug. After that comes shell plating options. You can choose chemical nickel plating, stainless steel passivation or olive drab finish. Further segments cover shell size, contact arrangement, contact style and keyway.
Contact style tells you which contacts are installed inside the connector. Available choices cover crimp pin, crimp socket, straight PCB pin and straight PCB socket. Keyway is one detail people frequently overlook. The standard N keyway is common for general use. Meanwhile, A, B, C, D, E keyways act as anti-mismatch features. They stop users from plugging incompatible connector versions together by accident.
We have put practical examples in our spec document. J599/20FA35SN is a J599 wall mount receptacle. It has size 09 shell with chemical nickel surface, contact arrangement 35, crimp socket contacts and regular N keyway. J599/26FA35PN works as its paired shielded plug, equipped with crimp pin contacts and N keyway. Those keyway drawings display the locating notches seen from the mating side, helping engineers confirm alignment during on-site assembly.
It is really important to select the correct part number. Picking the wrong model may cause mating issues and hold up your whole project schedule. Our technical team can explain the naming logic, review your working conditions and suggest the suitable J599 connector for your system. Drop us a message if you need complete datasheets, pin layout drawings or sample support for your equipment design work.