roofing nails with umbrella head low carbon steel,Q195 electric and hot dipped galvanized Twist ... Shank. Facotry roofing nailswith umbrella nails, umbrella Nails,roof nails with umbrella head, roof nails, 1.Diameter: BWG6-BWG16 2.Common Size ... :Electro Galvanized, Hot Dipped Galvanized. 6.Description: Dimond point with umbrella head or flat head7.Body: Twist Shank or Plain Shank Min ...