The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65°C to 200°C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they offer flexibility in design. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure reliable performance. The connectors come in different styles, such as front wall mount, rear wall mount, and jam nut receptacles, all with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they provide secure connections. Suitable for military and industrial use, these connectors are known for their durability and environmental sealing, making them a preferred choice for critical applications.