MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert and are designed for harsh environments, with an operating temperature range from -65 °C to 200 °C. Available in various receptacle options, including front wall mount, rear wall mount, and jam nut, they ensure RFI grounding. With 9 shell sizes and 52 insert arrangements using M39029 rear release crimp contacts, these connectors offer versatility. Constructed with high-strength aluminum shells and various plating options such as cadmium and nickel, they ensure durability. RoHS compliant finishes are also available. Suitable for military and industrial applications, these connectors deliver reliable performance in demanding conditions.