Specification Brand : Stimpson BulletPoint1 : DIMENSIONS IN INCHES: Hole Size: 7/16 Flange Diameter: .890 Length Under Flange: .255 Metal Thickness: .018 Inside Diameter: .512 Outside Diameter: .890 Metal Thickness: .018 BulletPoint2 : HIGH QUALITY - All products are rigorously inspected in-house to yield near-zero defect rates. BulletPoint3 : RICH HISTORY - Founded in 1852, Stimpson produces the largest variety of standard and special eyelets, grommets, washers and hole plugs of any single company in the world. BulletPoint4 : Finishes: Plain Brass, Dull Black Chemical Finish and Nickel Plated BulletPoint5 : Industries: Industrial Fabrics, Commercial Printing & Signage, Marine, and more Color : Plain Brass ExteriorFinish : Brass ExternallyAssignedProductIdentifier1 : 601393910299 ExternallyAssignedProductIdentifier2 : 0601393910299 ItemName : Stimpson 2RRGSWB3600 Rolled Rim Grommet and Spur Washer Brass Durable, Reliable, Heavy-Duty #2 Set (3,600 Sets) ItemPackageDimensions_Height : 11 inches ItemPackageDimensions_Length : 16 inches ItemPackageDimensions_Width : 9 inches ItemTypeKeyword : grommet-kits Manufacturer : Stimpson Co., Inc. Material : Brass MetalType : Brass NumberOfPieces : 3600 PartNumber : 2RRGSWB3600 ProductDescription : Grommet (inches): Hole Size: 7/16 Flange Diameter: .890 Length Under Flange: .255 Metal Thickness: .018