Coarse thread, fine thread, double thread, high and low thread, with various head types and drive types. Used in wooden article Product NameChipboard ScrewApplicationUsed in wooden articles and wooden structuresSizeDia:3mm-8mm, Length:<80mmMaterialCarbon steel or stainless steelHeadFlat, countersunk,double countersunk (Pan head is also available)Drive/RecessPozi, Torx, Philips, or ...