MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, with environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front and rear wall mount, jam nut receptacles, and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors come with high-strength aluminum shells and a choice of plating options, including cadmium-free finishes. Ideal for harsh environments, they ensure reliable connectivity with gold-plated contacts and a durable construction. The bayonet coupling mechanism and RoHS compliance make them suitable for military and industrial applications.