MIL-DTL-38999 Series I connectors boast a robust design with up to 128 contacts housed within an insert, ensuring reliable connectivity in harsh environments. These circular connectors, compliant with military specification MIL-DTL-38999 I, feature various mounting options such as front wall mount, rear wall mount, and jam nut receptacles, all offering RFI grounding. With a wide operating temperature range from -65 °C to 200 °C, they are suitable for demanding applications. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, providing flexibility for different contact sizes. Constructed with high-strength aluminum shells and offered in multiple plating options, including RoHS-certified finishes, they guarantee durability and performance. The MS27467 model, in particular, is a straight plug with 18 gold-plated contacts (size 20), ensuring excellent conductivity. With a service rating of I and environmental resistance, these connectors are ideal for critical systems in aerospace, defense, and industrial settings.