The HST ATFE 7.70/4.17 (X) is a two-piece, compact connector system from Amphenol. It features a 7.70mm OD shell with a 4.17mm ID, with an X style threadlock closure. The system is designed with a removable backshell, and can accommodate up to 17 contacts. It has a durable housing with superior performance, vibration, and shock resistance, and is designed to withstand harsh, high-vibration environments. The system is also designed with a keyed collet design, which prevents misalignment during mating. It is suitable for use in a wide range of applications, including industrial, aerospace, automotive, and telecom.