1mm Discrete Wire System Samtec 1mm Discrete Wire System is a space-saving discrete wire system with crimp-style dual leaf contacts for a reliable wire-to-board connection. This Samtec 1mm-pitch wire system offers single-row (2-20 contacts) and double-row (4-40 contacts) versions and vertical and right-angle PCB connectors. These interconnects are available as components or complete assemblies.