Product Info. Model NO: A193 Gr. B7/B7M Type: Round Head Head Style: Round   Material:  High Strength Steel Standard: ASTM Trademark: SD Export  Markets : USA, Canada, Brazil, U. K., France, Germany, Spain, Italy, Switzerland, Dubai, Singapore, Malaysia, Japan, Korea. Etc. Grade: Gr. B7/B7M Diameter: 1/4"-4" Surfaces:  Plain, Black, Zinc (ZP), Yellow Zinc Plating (YZP), Hot Dipped Galvanized (H.D.G), Dacromet . Heat Treatment:Need Heat Treatment Advantages: -Competitive Price! -Well and High Quality Control! -Satisfactory Service! -OEM service available! -Customer’s Design and Logo are Welcome!