Amphenol JMS3456W28-21A Circular Connector Plug

Amphenol JMS3456W28-21A circular connector plug is a MIL-DTL-5015-style inline plug from Amphenol Aerospace Operations, configured as shell size 28 with insert arrangement 21. This 37-position plug uses size 16 contacts and features threaded coupling for secure mating in demanding environments, with termination via crimp contacts. The design specifies a 13 A current rating per contact, supporting power and signal paths in harsh or aerospace-influenced applications, while maintaining a compact form factor. As part of the MS3456/MS3456W family, the JMS3456W28-21A plug mates with the corresponding sockets in the same insert arrangement and shell size, enabling reliable, field-serviceable connections in equipment where a high-density circular interface is required.