The MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts housed in an environmentally sealed insert, ideal for harsh environments. Featuring various receptacle options like front wall mount, rear wall mount, and jam nut configurations, they ensure versatile installation. These connectors, compliant with military specification MIL-DTL-38999 I, guarantee reliable performance across a wide temperature range from -65 °C to 200 °C. Constructed with high-strength aluminum shells, they come in nine shell sizes and 52 insert arrangements, accommodating diverse application needs. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax variants, they facilitate secure and efficient connections. Available in various plating options such as electroless nickel and cadmium finishes, these connectors cater to different environmental requirements. With their gold-plated contacts, they ensure optimal conductivity and durability, making them suitable for demanding military and industrial settings.