We stock a wide variety of fasteners ideal for many applications around the home, farm, business, automotives, and in industry. Most of our fasteners have a light zinc plating over steel giving a more rust resistant finish. We also sell coated and stainless products for additional rust resistance. We stock many grades of fasteners ranging from low carbon steel on up to hardened, heat treated steel. Not all fasteners are applicable for all applications so be certain to test thoroughly and get the opinion of a licensed builder or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person. Diameter 1: 1 inch Diameter 2: 2-1/2 inches Material: Steel Finish: Zinc Thread size: uss Diameter: 1 Material: Steel Finish: Zinc Thread Size: USS Hardness: Grade 2 / A307 UPC 014973325343 ASIN B00OHX4LD8 Brand Hard-to-Find Fastener Model 014973325343 Set Name 10-Piece Size Name 1 Count (Pack of 10) Metal Type Alloy Steel Unit Count 10 Count Item Weight 1.7 pounds Part Number 014973325343 Thread Size USS Washer Type Flat Finish Types Zinc Grade Rating Industrial Manufacturer Hard-to-Find Fastener Fastener Size 1 Fastener Type Flat Washer Material Type Steel Item Thickness 0.17 millimeters Exterior Finish Zinc Item Dimensions 4.5 x 3.25 x 2.12 inches Number Of Items 10 Number of Pieces 10 Outside Diameter 2.5 millimeters Screw Head Style Flat Included Components Washers(10) Compatible Groove Diameter 1 inches