MIL-DTL-38999 Series I connectors offer robust 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 ensure secure installations. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for diverse applications. Utilizing M39029 rear release crimp contacts, they guarantee reliable performance. Available in various shell sizes and insert arrangements, they cater to different needs. Made of high strength aluminum with plating options including gold, electroless nickel, and cadmium finishes, they provide durability and versatility. RoHS compliant options are also available. With a mating type of bayonet and a service rating of I, they meet stringent military specifications for quality and performance. Ideal for use in demanding environments, these connectors ensure efficient and secure electrical connections.