MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, providing robust environmental sealing and an impressive operating temperature range of -65 °C to 200 °C. This harsh environment connector family offers front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, ensuring versatile connectivity options. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with high strength aluminum shells, these connectors come with a range of plating choices, such as cadmium-free finishes, ensuring compliance with RoHS regulations. Suitable for demanding applications, they guarantee reliable performance with their durable design and 500-cycle mating life. With features like gold contact plating, they provide excellent conductivity even in challenging environments. Perfect for military and industrial use, these connectors meet MIL-DTL-38999 I specifications, offering a secure and efficient solution for your connectivity needs.