MIL-DTL-38999 Series I connectors feature up to 128 contacts enclosed in an insert, offering robust environmental sealing for reliable performance in harsh conditions. With a wide operating temperature range of -65°C to 200°C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they utilize rear release crimp contacts for secure connections. The high-strength aluminum shells come in different plating options, including cadmium-free finishes, ensuring compliance with RoHS regulations. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors provide versatility for different mounting requirements. Suitable for military and industrial use, they guarantee durability with a service rating of I and a mating life of 500 cycles.