Wiha 28620 8mm / 1 Nm Torque Cable Key Blade

8.0mm / 1 Nm Torque Cable Key Blade for Threaded Hex Connectors Overall length / OAL: 218 mm (8.6") For torque controlled fastening of cable plug connectors with Hex heads. Used with Wiha TorqueControl Screwdrivers:28504 - 7.5 - 20 in-lbs Adjustable Torque Screwdriver 28552 - 0.8 - 2.0 Nm Adjustable Torque Screwdriver 28526 - 7.5 - 20 in-lbs ESD Adjustable Torque Screwdriver Most people just hand-tighten their coax cables, let alone actually use a torque wrench to get the perfect torque. If you want to "do it right", Wiha now makes a series of Cable Keys for use with our standard Torque Screwdrivers, designed specifically to prevent over-tightening of all sizes of HEX cable connectors. Over-torquing can possibly crush the insulation, as well as the center contacts and ground mating surfaces. Any change to those can alter the impedance and increase the VSWR. Under-torquing can be just as bad if an air-gap is left in the insulator, or the center pin or ground mating surface isn't fully engaged. This becomes a more significant problem with higher Gigahertz."