Custom MachinesRB&W SPAC NutsIn 1998 J-Tech was asked by a local company to build machines to install self-pierce and clinch nuts. The machines were to install octagon shaped pierce and clinch nuts into steel hydroformed parts. Custom MachinesSince 1988 J-Tech has been involved in designing and building custom machines for industry. Machines that we have supplied include, grease injection machines, stud install machines, self pierce and clinch nut install machines. J-Tech Tooling & Machines. more... See more text