MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front wall mount, rear wall mount, and jam nut receptacles, these connectors offer RFI grounding plugs for added versatility. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they ensure reliable connectivity. Constructed with high-strength aluminum shells and offering plating options such as electroless nickel and cadmium finishes, these connectors are suitable for diverse applications. RoHS compliant options are also available, making them a reliable choice for demanding environments.