MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. These connectors utilize M39029 rear release crimp contacts and come in high-strength aluminum shells with multiple plating choices, including RoHS-certified cadmium-free finishes. Ideal for military applications, they ensure reliable performance with gold-plated contacts and a bayonet coupling mating type. Suitable for wall mounting, they have a durable construction and meet stringent military specifications for quality and reliability.