MIL-DTL-38999 Series I connectors, part of the MS27505 family, are rugged and reliable solutions for harsh environments. They feature up to 128 contacts in an environmentally sealed insert, with an operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer flexibility for different applications. The high strength aluminum shells come in a range of plating options, including RoHS compliant finishes. With options for front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, these connectors provide versatile connectivity solutions. Utilizing M39029 rear release crimp contacts, they ensure secure and efficient connections. Perfect for military and industrial use, MIL-DTL-38999 Series I connectors are designed for durability, with a service rating of I and a mating life of 500 cycles.