Packaging Detail: Carton and pallet or as customer's request. Delivery Detail:20 days. Specifications:1.Material: stainless steel(410, 304, 316)2.Finish: Plain,Zinc plated,black,Chromate,Nickel-plated and so on. 3.Size: M2.5-M6.3 4.Length: 13mm----127mm5.Head type: hex, flat, pan,rouWe can product the screws according to your drawing. Self drilling self tapping screw