MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts in an insert. These circular receptacles, designed for wall mounting, boast a rugged construction with high-strength aluminum shells and various plating options, including cadmium-free finishes. Operating seamlessly in temperatures ranging from -65°C to 200°C, they meet stringent military specifications for performance and durability. Utilizing removable crimp contacts, these connectors ensure secure mating with a bayonet coupling mechanism. Ideal for applications requiring environmental resistance, they are suitable for use in aerospace, defense, and industrial settings.