The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, they include M39029 rear release crimp contacts in multiple sizes for flexibility. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are designed for harsh environments. Constructed with high-strength aluminum shells and offering various plating options such as cadmium and nickel, they ensure reliable performance. RoHS compliant finishes are also available. Suitable for military and industrial applications, these connectors are essential for ensuring secure and durable electrical connections in demanding settings.