MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they come in high-strength aluminum shells with options for plating, including cadmium-free finishes. The connectors, compliant with RoHS standards, are ideal for military and aerospace applications, offering durability and conductivity with gold-plated removable crimp contacts. Mating is facilitated through bayonet coupling, with options for front and rear wall mount or jam nut receptacles. Suitable for both male and female contacts, these connectors ensure 500 mating cycles and provide environment-resistant protection.