"E" Nuts from Glenair fulfill basic backshell requirements for OEM systems which require a connector rear-end accessory. They are designed to fill connector rear-end threads and compress connector sealing grommets in Inside-the-Box applications.

"E" Nuts are a small family of backshells without strain relief for use with circular connectors. "E" Nuts are typically used inside box applications where there is no EMI/RFI, environmental or strain-relief requirement, but because some OEMs require that all connectors be equipped with a backshell, the simple "E" nut has broad application in the interconnect industry.  More importantly, by filling the threads on the back of the connector, the "E" nuts serves to compress the connector sealing grommet. This insures proper performance for those connector designs which require pressure on the grommet to stabilize and align connector contacts.