The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Available in various mounting options like front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in applications. These connectors adhere to military specification MIL-DTL-38999 I and come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Constructed with high-strength aluminum shells, they are offered in different plating options such as electroless nickel and cadmium finishes. RoHS compliant variants are also available, ensuring environmental responsibility. Ideal for demanding scenarios, these connectors provide reliable connectivity with features like bayonet coupling, gold-plated removable crimp contacts, and environment-resistant design.