The TE Connectivity 406372-6 is a SL 110Connect modular jack — an 8p8c (RJ45, Ethernet) keystone-style jack with IDC, pressdown, punchdown block termination on the rear. It's built for Cat5e rated channels, meaning it supports 100 MHz bandwidth and 1 GbE links in structured cabling. The blue polycarbonate (PC) housing and gold-plated phosphor bronze contacts (50µin / 1.27µm on the mating interface) give it the corrosion resistance and mating cycle life for repeated patching in a telecom closet or equipment room.
The 406372-6 is listed as Obsolete. If you need a guaranteed long-term supply, a Cat5e or Cat6 RJ45 jack from the active SL 110Connect or similar TE modular jack family should be evaluated for footprint and IDC compatibility; the 8p8c interface and punchdown termination are standard, but the specific housing keying and PCB footprint (if panel-mount) need a physical check against the original.
What the Cat5e Rating Means for the Fit
The Cat5e rating is the performance ceiling — 100 MHz, 1 GbE. That's sufficient for most enterprise LAN drops and industrial Ethernet (Profinet, EtherNet/IP) at 100 Mb or 1 Gb line rates. It is not rated for Cat6 (250 MHz) or Cat6a (500 MHz) channels, so if the cabling plant is spec'd for 10 GbE, this jack is the bottleneck. The 50µin gold on the RJ45 contacts is a good match for the 750+ mating cycles typical of a patch panel or wall plate; a lesser flash gold would wear through faster in a frequently-repatched environment.