The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. With various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering multiple plating options, they ensure durability and performance. With RoHS compliant finishes available, these connectors are ideal for military and industrial applications requiring secure and environmentally sealed connections.