MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, these connectors come in various shell sizes and insert arrangements, offering versatility in applications. Constructed with high-strength aluminum shells and available in different plating options, including RoHS-certified finishes, they ensure reliable performance. The connectors, including front and rear wall mount options, jam nut receptacles, and RFI grounding plugs, utilize M39029 rear release crimp contacts for secure connections. With a bayonet coupling and straight plug design, they are ideal for military and industrial use, meeting MIL-DTL-38999 I specifications.