Böllhoff repair kits HELICOIL® plus thread inserts for metals, stainless steel, metric ISO thread. Contents: thread inserts, twist drill, hand tap made of HSS, installation mandrel, tang breaker. Size: M6x1.00 with 20 inserts each in lengths of 6mm, 9mm, and 12mm. HELICOIL® plus thread inserts made of austenitic chrome-nickel steel (tensile strength of at least 1400 N/mm²) with rolled female thread for high surface quality. High-strength, wear-resistant thread with extremely low and constant thread friction torque. Higher and consistent preload force during repeated screw connections, better utilization of the yield strength of high-strength screws, significantly reduced torsional stress, surface roughness up to 90 percent lower compared to cut threads.







