I require price and delivery time for the attached square nuts and screws. Delivery to another factory in Dongguan.please Email me directly so I can attach drawing showing a plain square stainless steel nut 14mm square X 4mm thick with M4 tapped hole in centre. Also we provide alternative nut, same size and material with a knurled surface. The knurling shown is only example suggestion. We rely on you to inform us what is possible.We look forward to your response.