The MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts in a single insert, ideal for harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, they ensure secure installations. These connectors, compliant with military specification MIL-DTL-38999 I, are designed for durability, with a wide operating temperature range from -65°C to 200°C. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, they guarantee reliable signal transmission. Available in 9 shell sizes and 52 insert arrangements, with a choice of plating options such as cadmium-free finishes, these connectors offer versatility for diverse applications. Made from high-strength aluminum, they provide excellent protection with options for RoHS compliance, making them a trusted choice for demanding environments.