Specification Brand : RAW PRODUCTS CORP BulletPoint1 : Square nuts can also be used in a channel or welded to other steel products. A square nut is a four-sided nut. BulletPoint2 : Compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening). BulletPoint3 : They are also much less likely to become rounded-off after repeated loosening/tightening cycles. BulletPoint4 : Use with a flat washer to avoid damage from sharp edges BulletPoint5 : Hot Dipped Galvanized products should only be used with fasteners of the same material BulletPoint6 : Weight: 2.2 oz (60 g) Color : Silver DriveSystem : External Hex DriveSystem1 : Square DriveSystem2 : External Hex ExteriorFinish : Galvanized ExternallyAssignedProductIdentifier : 4991644081042 ExternallyAssignedProductIdentifier1 : 730656603095 ExternallyAssignedProductIdentifier2 : 0730656603095 ExternallyAssignedProductIdentifier3 : 00737765810475 FinishType : Hot Dipped Galvanized GradeRating : Grade 5 ItemName : Square Nuts Hot Dipped Galvanized Grade 2-5/16"-18 UNC - Qty-25 ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : square-nuts Manufacturer : RAW PRODUCTS CORP Material : Zinc MeasurementSystem : Inch MetalType : Alloy Steel MetalType1 : Stainless Steel MetalType2 : Alloy Steel ModelNumber : US-SA-AJD-114082 NumberOfItems : 25 PartNumber : 730656603095 Pattern : Solid ProductDescription : Square Nuts Hot Dipped Galvanized Grade 2 - 5/16"-18 UNC - Qty-25 ProductSiteLaunchDate : 2016-01-23T08:00:00.000Z Size : 5/16"-18 StreetDate : 2011-04-19T00:00:01Z Style : Square Nut UnspscCode : 31161700