Specification Brand : cSeao BulletPoint1 : [Package] There is 25 pieces 1/4-20 wing nuts in the package, coming with one storage container BulletPoint2 : [Dimensions] The thread is 1/4" with 20TPI coarse pitch and a total width of 25mm and total height of 13mm,the flanged base is 19mm width, you could check size details by picture 2 more clearly BulletPoint3 : [High-Quality Steel] Made of high-quality alloy steel with zinc plated, this wing nut is tough, and durability BulletPoint4 : [Easy Installation] This wing nut is easy to install by hand or wing nut driver, like easel, streetlight, shutter panel BulletPoint5 : [Warranty and Service] Committed to best service to you if you have issues about units Color : Silver DriveSystem : Tri-Wing ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 717803449201 ExternallyAssignedProductIdentifier2 : 0717803449201 FinishType : Painted ItemName : cSeao 1/4"-20 Die Cast Zinc Metal Wing Nut, Washer Base Wing Nut for Hurricane Shutter Panels, Pack of 25, Silver Tone ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 5.3 centimeters ItemTypeKeyword : wing-nuts Manufacturer : cSeao Material : zinc alloy steel MeasurementSystem : Inch MetalType : Alloy Steel NumberOfItems : 25 NumberOfPieces : 25 PartNumber : CS748 ProductDescription : The cSeao 25pcs 1/4-20 flanged wing nuts are high-quality, durable fasteners made from zinc alloy steel, ensuring strength and longevity. These large flanged base are ideal for applications requiring a good fastening strength, making them perfect for panels, furniture, and other work. The zinc finish adds a sleek look while providing some corrosion resistance. With a consistent thread and accurate sizing, they install smoothly. Size: 1/4-20 Color: silver Quantity: 25 pieces