MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert for high-density applications. With a wide operating temperature range of -65 °C to 200 °C, these connectors provide reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they offer flexibility for different connectivity needs. Constructed with high strength aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors ensure durability and environmental protection. The Bayonet coupling mechanism allows for quick and secure mating, while the jam nut mounting option offers easy installation. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 I specifications for quality and performance.