bolts and nuts with embossed  used as auto parts and electronic devices parts 
1):material Al,stainless steel,brass and so on as customised
2):Can be plating and oxidation
3):Size:1mm-200mm and tolerance between +/-0.01 mm
4):Used on phone,LED torch  and other electronic products as  connect and anti-skidding function
5):ISO9001:2008 certified and Rohs compliance
6):we are OEM manufacturer, drawings are welcomed