Special CD lines screw by cold forging on flat head hexagon socket step stainless steel 304 screw

Prettify the appearance of  decorative shell ,electronics,slide phone,promote the equipment's value.

Hexagon socket step screw is the standard screw but we can develop the special cold forging screw with CD line/grain on the flat head,CD thread can be  between 0.18-0.25MM ,deepth 0.06-0.13MM,size with M2.5-0.45P*1.7.Special look and Special lines with the tiny screw used in the electronics.You will choose the machining way to process this special screw ,but theres 2 question when you use the machining way. cost and technique of stainless steel process.We can produce only cold forging to save cost and solve the technical problem.Talk to us ,you will get more detail of this kind of stainless steel special screw.