The b&m-TRIMNUT® turns the thread-forming principle upside down. In this case, it is not the screw but the nut that is both the fastener and the thread-forming tool. Designed to remove weld spatter on welding studs or coating residues, the b&m-TRIMNUT® is also capable of forming a thread in conjunction with a corresponding bolt geometry.
The b&m-TRIMNUT® enables the removal of imperfections by locally reshaping the damaged thread turns and it also removes rust and debris. This operating principle is effective during screwing and unscrewing and it ensures safe assembly and disassembly without destroying the connection.