The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 gold-plated contacts in a straight plug configuration. These circular connectors, meeting military specification MIL-DTL-38999 I, offer reliable performance in temperatures ranging from -65°C to 175°C. Available in various shell sizes and insert arrangements with removable crimp contacts, they ensure secure connections. Constructed with high-strength aluminum shells and offering options for electroless nickel and cadmium finishes, these connectors provide durability and environmental resistance. Suitable for wall and jam nut mounting, they are ideal for applications requiring dependable connectivity in challenging conditions.