MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert and offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. These connectors, adhering to military specification MIL-DTL-38999 I, come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Operating between -65°C and 200°C, they ensure reliability in extreme conditions. Constructed with high-strength aluminum shells and available in various plating options including RoHS certified finishes, they guarantee durability and performance. Suitable for applications requiring environmental resistance, these connectors are essential for demanding industrial and military settings.