A screw refers to parts for construction machinery. It is a kind of small cylindrical or conical metal rod with a threaded part with a sharp end like a nail. It has a slotted or dimpled head and is used alone.
With special materials, concrete nails are specialty nails compared with common iron nails . In practical application, people also used to call it masonry nails. These Golden Deernails are the most popular fasteners for securing objects into masonry and other hard & brittle materials. There are complete types of concrete nails, including galvanized concrete nails, color concrete nails, black concrete nails, bluish concrete nails with various special nail heads and shank types. Shank types include smooth shank, twilled shank for different substrate hardness. With above features, concrete nails offer excellent piecing and fixing strength for firm and strong sites.