Boellhoff HELICOIL Thread Repair Kit, M4 x 0.7mm, 64 Pieces

Repair or reinforcement of highly stressed metric threads. Also suitable for lower strength materials, such as aluminium or magnesium. Stainless steel A2 according to industry standards, aviation and space (eg DIN 8140, DIN 65536, EN 2944, LN 9039, LN9490). Complete repair kits with 3 x 20 pieces (for sets M3 to M6) or 3 x 10 (for sets M8 to M14) threaded inserts.