Specification Brand : EASTLO BulletPoint1 : Package Contents: 12 PCS BulletPoint2 : Thread Size: 5/16-18, Screw Length (excluding the height of the head): 5/8 inch BulletPoint3 : External Hex Drive: 1/2 inch; Height of the Head: 8.1mm (max); Thread Coverage: Full Machine Thread BulletPoint4 : Widely used in automobile industry (compatiable with most car brands). The flanged hex bolt allows assembly line workers to install the fasteners much faster than a comparable bolt and washer. High quality material ensures it's the best replacements for the old car bolts. BulletPoint5 : Made of 100% Stainless Steel 304 (18-8) which is superior to regular steel and any zinc plated fasteners, provides good strength and corrosion resistance in bad environments. Color : Silver ExteriorFinish : Stainless Steel ExteriorFinish1 : Stainless Steel ExteriorFinish2 : Black Oxide ExternallyAssignedProductIdentifier1 : 888742005398 ExternallyAssignedProductIdentifier2 : 0888742005398 ExternallyAssignedProductIdentifier3 : 00672036033385 GpsrSafetyAttestation : 1 GradeRating : Grade A ItemName : 5/16-18 x 5/8" Flanged Hex Head Bolts Screws, 304 Stainless Steel 18-8, Full Thread, Coarse Thread, 12 PCS ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 3.94 inches ItemPackageDimensions_Width : 3.95 inches ItemPackageQuantity : 1 ItemTypeKeyword : hex-bolts Manufacturer : EASTLO ManufacturerGrade : Grade 10 9 Material : Stainless Steel MetalType : Carbon Steel ModelNumber : 625-1500 NumberOfItems : 12 NumberOfPieces : 1 PackageLevel : unit PartNumber : AB140202-12 ProductDescription : 5/16-18 x 5/8" Flanged Hex Head Bolts Screws, 304 Stainless Steel 18-8, Full Thread, Coarse Thread, 12 PCS ProductSiteLaunchDate : 2023-10-17T04:34:37.744Z Size : 5/16-18 x 5/8" SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 12 UnspscCode : 31161500