The design of the insert nut can closely riveting ultra-thin panels, its thickness can thin. 06 in / 1.5 mm; This kind of fasteners, mainly used in sheet riveting, especially need teeth after grain and riveting products still need to be smooth and flush with panel; The product riveting after both sides won't produce burr. Tooth grain specifications: # 4 to # 10 and M3 to M6