HELICOIL Spark plug thread repair kit PLUS M12X1.25 485.04.75

Böllhoff repair package HELICOIL® plus

threaded inserts for metal, stainless steel. Spark thread according to DIN 72 502a

Contents: threaded inserts, combination taps, placement stem.

Dimension: M12 x 1.25 Content: 10 inserts in lengths of 12 - 18-24

HELICOIL® plus thread inserts are made of austenitic chrome-nickel steel (tensile strength of min. 1400 N / mm2) is manufactured. The rolled nut thread has a high surface quality. This ensures a high strength, wear resistant thread with extremely low friction and consistent thread. In repeated bolting a higher and more consistent preload force is achieved this way with the same torque. This results in better utilization of the yield strength of high strength bolts. Torsional stress is significantly reduced: Compared to chopped strands, the HELICOIL® surface roughness is furthermore up to 90 percent lower.