MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. These connectors, designed for harsh environments, come in various mounting options including front/rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Constructed with aluminum shells and offering different plating options, these connectors are suitable for diverse applications. RoHS compliant finishes are also available.