Specification Brand : Online Metals BulletPoint : 12 inches BulletPoint1 : A500/A513 steel exhibits good strength, weldability, low cost, and is the most common type of steel tubing in North America. BulletPoint2 : 3" Height, 4" Width, 0.25" Wall, 48" Length BulletPoint3 : Hot Roll A36 is typically used for general structural purposes such as bridges and buildings BulletPoint4 : Meets ASTM-A513, ASTM-A500(call for availability) BulletPoint5 : [Application]: These round steel rods are suitable for gear shafts, motor shafts, short support shafts, shaft pocket models, miniature axle, and can be applied for various shaft DIY model planes, model ships, model cars, and more. Color : Silver ExternallyAssignedProductIdentifier1 : 740224047022 ExternallyAssignedProductIdentifier2 : 0740224047022 GradeRating : A36 ItemForm : Rod ItemLength : 12 inches ItemName : A500/A513 Carbon Steel Rectangular Tubing, Hot Rolled, ASTM A36, 3" Height, 4" Width, 0.25" Wall, 48" Length, OnlineMetals ItemPackageDimensions_Height : 10.16 centimeters ItemPackageDimensions_Length : 121.92 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 1 ItemShape : Hollow Rectangular Bar ItemTypeKeyword : steel-tubes Manufacturer : OnlineMetals Material : hot_rolled_steel MeasurementSystem : Metric ModelNumber : 77223 NominalWallThickness : 0.12 inches NumberOfItems : 1 PartNumber : 10214 ProductDescription : Features: Round bars are easy to cut and can be cut to your own needs and formed into any size you want. Can be drilled, cut, heated, and shaped. The round bar has a smooth surface, and the steel has good hardness, is easy to shape without cracks. Round steel bars are sturdy and durable. It is widely used for processing top circle, end face, bore, thread, plane, step, groove. Suitable for copper, aluminum, unhardened steel items. These round steel rods are suitable for gear shafts, motor shafts, short support shafts, shaft pocket models, miniature axle, and can be applied for various shaft DIY model planes, model ships, model cars, and more.