MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, they provide versatility in installation. These circular connectors, compliant with military specification MIL-DTL-38999 I, ensure reliable operation in extreme conditions, with an operating temperature range from -65 °C to 200 °C. Constructed with durable aluminum shells and available in various plating options, including RoHS-certified finishes, they guarantee long-lasting performance. Perfect for applications requiring secure and environmentally sealed connections, these connectors are essential components in demanding environments.