Specification Brand : Glvaner BulletPoint1 : Thread Size: 5/16-18; Thread Pitch: 18 threads per inch; Thread Length: 5/8 inch (excluding the head height) BulletPoint2 : Material: 304 stainless steel (A2-70) with special black coated treatments, greater strength and better corrosion resistance performance than regular stainless steel or zinc plated fasteners; No scratches, No Burrs, No deform; Ideal for heavy duty projects BulletPoint3 : Package include: 15 pcs; Hex Drive Size: 1/2 inch BulletPoint4 : Applications: Flange hex bolts are commonly used in machinery assembly, automotive repair, constructions and other industries where a strong and reliable fastening solution is required BulletPoint5 : The extra large washer head helps to distribute the load. The one-piece design eliminates the need of a separate washer and can be more efficient and easier to use. A washer is still needed on the nut side so the set we provide help you save your time and money. You could also find the flange nut choice in our store if you need. Color : Black ExteriorFinish : Black Oxide ExternallyAssignedProductIdentifier : 6259849815021 ExternallyAssignedProductIdentifier1 : 763722150551 ExternallyAssignedProductIdentifier2 : 0763722150551 GradeRating : Grade A ItemName : Glvaner 5/16-18 x 5/8" (15 pcs) Stainless Steel Serrated Flanged Hex Head Bolts Bolts, 18-8 (304) Stainless Steel, Full Thread, Black Coated ItemPackageDimensions_Height : 0.78 inches ItemPackageDimensions_Length : 4 inches ItemPackageDimensions_Width : 4 inches ItemPackageQuantity : 1 ItemTypeKeyword : hex-bolts Manufacturer : Glvaner ManufacturerGrade : Grade 10 9 Material : Stainless Steel MetalType : Carbon Steel ModelNumber : mtf220927xt1542 NumberOfItems : 15 NumberOfPieces : 300 PartNumber : GVN34219-15 ProductDescription : Glvaner 5/16-18 x 5/8" (15 pcs) Stainless Steel Serrated Flanged Hex Head Bolts Bolts, 18-8 (304) Stainless Steel, Full Thread, Black Coated ProductSiteLaunchDate : 2024-11-08T09:03:42.591Z Size : 5/16-18 x 5/8" SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 15 UnspscCode : 31161500