MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering 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 in multiple plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial use, these circular plugs ensure conductivity and protection in demanding environments.