MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Featuring a wide operating temperature range of -65 °C to 200 °C, these rugged connectors are ideal for harsh environments. Available in various mounting options including front and rear wall mount, as well as jam nut receptacles, they ensure secure and reliable connections. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they provide durability and versatility. Suitable for military and industrial applications, these circular connectors meet MIL-DTL-38999 I specifications, guaranteeing quality and performance.