The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts within an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. Constructed with high-strength aluminum shells and offered in a range of plating options, including cadmium-free finishes, they ensure durability and reliability. With options for wall mounting and bayonet coupling, they provide secure connectivity in demanding conditions. The use of M39029 rear release crimp contacts guarantees efficient and secure contact termination. Meeting military specification MIL-DTL-38999 I, these connectors are suitable for a wide range of military and aerospace applications requiring robust and reliable electrical connections.