The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, durable enough for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with aluminum shells and offering multiple plating options, they are resistant to corrosion. Designed for military specifications, these connectors are reliable with gold-plated contacts, suitable for applications requiring high conductivity. The RoHS compliant finish options cater to environmental regulations, making them ideal for a range of industries.