The MIL-DTL-38999 Series I connectors offer high performance in harsh environments, with up to 128 contacts housed in a secure insert. Featuring a wide operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they come with M39029 rear release crimp contacts for reliable connectivity. Constructed with durable aluminum shells and offering multiple finish coatings, including RoHS certified options, these connectors ensure long-lasting durability. Their bayonet coupling design and environmental sealing make them suitable for military, aerospace, and industrial use, providing excellent conductivity and protection against environmental factors.