MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they offer a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors come in high strength aluminum shells with options for plating such as cadmium-free finishes. The connector family includes front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in demanding applications. The MS27496 model, a box-mounting receptacle with bayonet coupling, is part of the MIL-DTL-38999 I series, known for its military-grade durability and performance. With gold-plated contacts, electroless nickel coating, and a service rating of M, these connectors are ideal for critical operations requiring rugged and reliable electrical connections.