PEM TDO self-clinching cable tie-hooks from PennEngineering remain securely fixed in place where installed to provide permanent attachment points for mounting wires and cables inside electronic chassis or enclosures. They install quickly without requiring screws or adhesives and their locations and positions can be specified during the design process to provide optimal layout for wires and cables inside assemblies. The cable tie-hooks are part of a growing family of self-clinching hardware solutions uniquely engineered to resolve bundled-wire challenges in electronic equipment. They can be supplied in several sizes for installation in metal sheets as thin as .040" / 1.02mm and as thick as .125" / 3.18mm. The hooks enable tie-bundled wires to be attached, removed, and returned to mounting points when components need to be accessed for service or when wires or cables must be replaced. The hook feature allows ties to remain intact and wires to remain wrapped. In addition, the feature (with inner diameter .340" / 8.64mm on the largest version) can serve both as a guide and a mount for lengths of cable or tubing. Upon installation of the hooks, panels on the reverse side of installation remain entirely flush without any spaces or openings, which adds value by minimizing EMI/RFI and preventing any potential contamination of electronics by dust or dirt.