sell flat countersunk long square neck bolts 1120090520

We are specialized in production of complex-shaped non-standard screws,rivets, rivet nuts, self-plugging rivets and high-precision turning parts. Our company has advanced heat treatment product line to ensure quality of products. Our products are now widely used in electric equipments,machinery,furniture,Vessel,electron,and so on. The material includes steel,stainless steel, copper, Allumimum,iron. we follow the standard of DIN,GB,ANSI,JIS, ISO ect.