Specification Brand : Clipsandfasteners BulletPoint1 : Flange Nut Size- 1/4"-20 flange nuts, thread size: 1/4-20, thread pitch: 20 threads per inch.Nuts Diameter: 0.433"; Nuts height: 0.236"; Flange Diameter: 0.594"; Hex Drive Size: 7/16". BulletPoint2 : Material:Our serrated flange hex nuts assortment kit is made of premium quality 304 Stainless Steel, can provides strength and great protection, good for outdoor use BulletPoint3 : Replacement Nuts - Flanged nuts spread their fastening force over a wider area than traditional nuts, this reduces the potential for damage to the mounting surface and allows for a more secure connection on uneven mounting surfaces; Widely used in home and construction BulletPoint4 : Wide Applications - Hex flange nuts are widely used in home, automotive, and tool shop; 1/4"-20 hex flange nut is a great replacement for industrial and construction fasteners, also can be a important accessories in your daily life BulletPoint5 : Package Included: Total 50 pieces 1/4"-20 flange nuts Color : Silver DriveSystem : External Hex ExteriorFinish : Phosphate ExternallyAssignedProductIdentifier1 : 821641546890 ExternallyAssignedProductIdentifier2 : 0821641546890 FinishType : Phosphate GradeRating : industrial ItemName : 25 M10-1.5 Hex Flange Nuts 21mm O.D. Phosphate ItemPackageDimensions_Height : 7.5 centimeters ItemPackageDimensions_Length : 4.6 centimeters ItemPackageDimensions_Width : 7.2 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : flange-nuts Manufacturer : Clipsandfasteners Inc Material : Plastic MeasurementSystem : Metric MetalType : Stainless Steel NumberOfItems : 50 NumberOfPieces : 25 PartNumber : 2946931 ProductDescription : Hex Flange Nut Phosphate Thread Size: M10-1.5 Flange Size: 21mm Hex Size: 15mm Height: 10mm Compatible With GM: 11501850 25 Per Package ProductSiteLaunchDate : 2010-08-21T12:00:00.000-08:00 Size : 1/4-20 SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31161700