The 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 from -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors offer versatility with front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Constructed with high-strength aluminum shells and offering multiple plating options, including cadmium-free finishes, they ensure reliable performance. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections, with gold plating for enhanced conductivity. Their bayonet coupling and straight plug design make them suitable for military and industrial applications where durability is crucial. RoHS compliance further underscores their commitment to environmental responsibility.