The M39029/28-409 is a size 12 shielded pin contact used for terminating shielded cables in high-reliability connectors. This component consists of an inner contact for the conductor and an outer contact with a crimp sleeve for the cable shield, ensuring robust electrical and mechanical connection. Assembly requires specific tooling, including an M22520/2-01 crimp tool with an M22520/2-34 positioner for the inner contact and an M22520/31-01 tool for the outer shield sleeve. The shielded design provides protection against electromagnetic interference, making it ideal for military and aerospace applications where signal integrity is paramount.