Dertec Welding nuts ( bushes ) have been especially designed for construction works in the conveyor and machinery industry. These handy nuts (bushes) can also be used in the disabled industry were easy height adjustments are of great importance. The nut has a 90 Degrees opening and fits perfectly on the corner of a rectangular tube. Basically these nuts are not provided with an internal thread, they offer just a pre-bore. After (hygienic ) welding the nut is the master for drilling a hole in the corner of an rectangular tube after which the thread can be cutted into the nut. Using of the Dertec welding nuts guarantees an easy processing and a good fitting of the Internal thread.