MIL-DTL-38999 Series II connectors feature up to 128 contacts within an insert, offering durable environmental sealing for reliable performance in harsh conditions. With an impressive operating temperature range of -65°C to 200°C, these connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. Available in nine shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells, they offer multiple plating options, including cadmium-free finishes, ensuring compliance with RoHS regulations. Ideal for military and industrial applications, these connectors provide secure and efficient electrical connections in demanding environments.