The 121668-0021 is a crimp contact, available as a pin or socket, intended for integration into APD 51-way connector assemblies. This contact is engineered to accommodate wire gauges from 0.75 mm² to 1.50 mm². Specific crimp dimensions are required for a secure connection, with wire crimp heights ranging from 1.25 mm to 1.30 mm and insulation crimp heights from 3.35 mm to 3.45 mm, depending on the wire used. The resulting termination meets IEC 352-2 and DIN EN 60352-2 standards, ensuring a minimum pull-out force of 80 N for 0.75 mm² wire and up to 135 N for 1.50 mm² wire. These contacts are essential components for creating reliable, high-density connections in applications utilizing the APD 51-way system with its bayonet coupling and secondary locking features.