MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering robust environmental sealing for reliable performance in harsh conditions. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. Designed for military specifications, these circular receptacles are ideal for box mounting with bayonet coupling, ensuring durability and longevity in demanding environments.