MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts in an insert. Designed for harsh environments, these connectors are sealed and can withstand temperatures ranging from -65°C to 200°C. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, they feature RFI grounding plugs for enhanced performance. With 9 shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts in multiple sizes. Constructed with high strength aluminum shells, these connectors come with plating options including cadmium finishes and RoHS certified alternatives. The straight plug design, with gold-plated removable crimp contacts, ensures reliable and durable connections. Suitable for military and industrial applications, these connectors offer environment-resistant performance and a mating life of 500 cycles.