MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. These circular receptacles, available in front wall mount, rear wall mount, and jam nut configurations, feature RFI grounding plugs for enhanced performance. With a wide operating temperature range of -65°C to 200°C, they ensure reliable connectivity in extreme conditions. The connectors come in various shell sizes and insert arrangements, accommodating M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and available in different plating options, including RoHS-certified finishes, they guarantee durability and compliance with environmental regulations. Suitable for military and industrial applications, these MIL-DTL-38999 I connectors provide conductive and environment-resistant solutions for critical systems.