Specification Brand : JW Winco BulletPoint1 : 12 mm ID BulletPoint2 : 30 mm OD BulletPoint3 : 7.5 mm Thickness BulletPoint4 : Washer body: Steel, turned BulletPoint5 : Zinc plated, blue passivated ExteriorFinish : Zinc ExternallyAssignedProductIdentifier : 1160011747550 ItemName : J.W. Winco 6341-ST-12-30-B-ZB GN6341 Washer with Bore for Countersunk Screw, 12 mm Bore, 30 mm OD, 7.5 mm Thickness, Steel Zinc Plated, Blue Passivated ItemPackageDimensions_Height : 4 inches ItemPackageDimensions_Length : 6 inches ItemPackageDimensions_Width : 6 inches ItemPackageQuantity : 1 ItemTypeKeyword : countersunk-washers Manufacturer : Ganter Material : Steel; Turned - Zinc Plated; Blue Passivated Material1 : Stainless Steel - Sandblasted Matte Finish Material2 : European Standard No. 1.4305 (American Standard Series 303) MetalType : Alloy Steel MetalType1 : Stainless Steel MetalType2 : Alloy Steel ModelNumber : 6341-ST-12-30-B-ZB NumberOfItems : 1 NumberOfPieces : 10000 PartNumber : 6341-ST-12-30-B-ZB ProductDescription : Designed for use with flat or oval head screws, finish cup washers eliminate the need for a countersunk hole and provide a clean appearance. Finishing washers also spread the load of the screw head over a larger area and allows you to use flat head screws on a surface too thin to countersink. ProductSiteLaunchDate : 2015-05-05T08:00:01.000Z Size : #8 StreetDate : 2017-05-15T00:00:01Z SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 31161500 WasherType : Countersunk