MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert and environmental sealing. With a wide operating temperature range from -65 °C to 200 °C, they ensure reliable performance in harsh conditions. Available in various shell sizes and insert arrangements, these connectors offer versatility for different applications. The connectors come in high-strength aluminum shells with options for plating finishes, including cadmium-free choices. Their jam nut mounting, bayonet coupling, and RFI grounding plugs make them suitable for military and aerospace uses. Utilizing M39029 rear release crimp contacts, they provide secure connections with a mating life of 500 cycles. Conductive and environment-resistant, these connectors are ideal for demanding industrial and defense systems.