MIL-DTL-38999 Series I connectors offer high-performance connectivity solutions for harsh environments. With up to 128 contacts in an environmentally sealed insert, these connectors ensure reliable operation in extreme conditions, with an impressive operating temperature range from -65 °C to 200 °C. Featuring various receptacle options such as front and rear wall mount, as well as jam nut, and RFI grounding plugs, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, catering to diverse application needs. Crafted from high-strength aluminum, they guarantee durability, while a choice of plating options, including RoHS-certified cadmium-free finishes, ensures compliance with environmental standards. With gold-plated contacts and electroless nickel coating, they offer superior conductivity and corrosion resistance. Suitable for military and industrial applications, these connectors, with their bayonet coupling and straight plug configuration, are ideal for demanding environments requiring rugged and reliable connectivity.