MIL-DTL-38999 Series I connectors, part of the MS27656 family, are designed for harsh environments with up to 128 contacts in an insert. Featuring front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in connectivity solutions. These circular connectors, meeting military specification MIL-DTL-38999 I, ensure reliable performance in extreme conditions with an operating temperature range of -65 °C to 200 °C. Constructed with high-strength aluminum shells, they provide durability while maintaining conductivity. Available in various plating options, including RoHS-certified finishes, these connectors are suitable for a wide range of applications requiring secure and environmentally sealed connections.