MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they offer versatility in design. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they provide reliable performance. Whether for front wall mount, rear wall mount, or jam nut receptacles, these connectors ensure secure connections in demanding settings. The use of M39029 rear release crimp contacts guarantees efficient and durable contact points. With options for gold contact plating, these connectors maintain optimal conductivity over their 500-cycle mating life. Suitable for box mounting with a back panel box mounting flange, they meet military specification MIL-DTL-38999 I standards for quality and performance in critical applications.