MIL-DTL-38999 Series I connectors boast up to 128 contacts housed in a durable insert, offering robust environmental sealing for reliable performance in harsh conditions. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Featuring various mounting options such as front and rear wall mount, as well as jam nut receptacles, they cater to diverse installation needs. The connector family includes RFI grounding plugs and comes in 9 shell sizes with 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Constructed with high-strength aluminum shells and available in a range of plating options, including RoHS certified cadmium-free finishes, these connectors ensure both durability and compliance. Suitable for military and industrial use, they offer reliable connectivity with gold-plated contacts and a mating cycle life of 500 cycles. With their conductive nature and ingress protection for potting, these connectors are essential for critical applications requiring secure and efficient electrical connections.