20-Position Right-Angle Plug for Dense Board-to-Board Interconnects
Gold plating on the contacts and board locks for solder-joint retention are standard.
Right-Angle Through-Hole Termination with Board Locks
The 2-row, 20-position layout uses center strip contacts, meaning the signal contacts are arranged in a dense strip along the centerline of the connector body rather than along the edges.
For a board-to-board plug that typically mates once during assembly and stays put, this is the right grade.