MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offered in various shell sizes and insert arrangements, they include M39029 rear release crimp contacts and come in high-strength aluminum shells with a range of plating options. These connectors, compliant with military specification MIL-DTL-38999 I, offer reliable performance with gold-plated removable crimp contacts, bayonet coupling, and wall mounting flange receptacles. Suitable for demanding applications, they ensure conductivity and environmental resistance, making them ideal for use in aerospace, defense, and industrial systems.