Specification Brand : Glarks BulletPoint1 : ♛【Package Includes】: You’ll get 20pcs carriage bolts, thread size: m6 x 30mm/0.24 x 1.18”, m6 x 50mm/0.24 x 1.97”, m8 x 50mm/0.31 x 1.97”, m8 x 70mm/0.31 x 2.75”, m10 x 80mm/0.39 x 3.15”. head diameter: 12.8mm/0.5”, 12.5mm/0.49”, 16mm/0.63”, 16.7mm/0.66”, 20.7mm/0.81”. 20pcs hex nuts, size: m6, m8, m10. 20pcs flat washers, size: m6, m8, m10. Thread Type: Coarse thread. Standard sizes, bolts meet ASME B 18.5 table3. Sufficient quantity and various sizes can meet your different daily use requirements. BulletPoint2 : ♛【Durable Material】: These carriage bolt screws are made of high quality carbon steel. It is not easy to break, corrosion-resistant, wear-resistant, rust-resistant, durable and has a long service life. These carriage bolt screws feature high strength and oxidation resistance, and can withstand high temperatures, cold weather and other harsh environments. They are strong and reliable, burr-free, with smooth and symmetrical heads, suitable for both indoor and outdoor applications. BulletPoint3 : ♛【Self-Locking Design】: These Imperial round head carriage bolts have a dome shaped head and a square neck to prevent theft. They are self-locking when used in square holes. The coarse thread type further enhances their grip and retention, providing a strong and reliable connection. Prevents rotation when tightening or removing nuts. It can be used in wood and metal applications. BulletPoint4 : ♛【Easy to Use】: These round head square neck bolts come with hexagonal nuts and washers for easy installation and use. Their strong holding power ensures stability and reliability of your project. In addition, these different sizes of carriage bolts are neatly packaged in separate compartments inside a transparent storage box. It is easy to differentiate between the sizes of the products. BulletPoint5 : ♛【Wide Application】: Round head square neck bolts are not only suitable for carriages. They can also be used for wood projects, wood framed shed construction, trailer deck boards, patio projects, outdoor bench seating conversions, automotive suspension systems, the machinery industry, and other structures that require sturdy support. Ideal for decks, gazebos, marine yachts, home and office appliances, communication equipment, valves, pumps, motors, pergolas, fences, docks, swings and more. Color : Black ExteriorFinish : Unfinished ExternallyAssignedProductIdentifier : 9108701794493 GradeRating : Grade A ItemName : Glarks 60pcs M6 M8 M10 Carriage Bolts Screws, Round Head Square Neck Bolts, Square Neck Carriage Bolts Screws with Nuts and Washers for Machinery Industry ItemPackageDimensions_Height : 3.5 centimeters ItemPackageDimensions_Length : 19.5 centimeters ItemPackageDimensions_Width : 3.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : carriage-bolts Manufacturer : Glarks Material : Zinc ModelNumber : G-4407 NumberOfItems : 60 NumberOfPieces : 1 PartNumber : G-4406 ProductDescription : Glarks 60pcs M6 M8 M10 Carriage Bolts Screws, Round Head Square Neck Bolts, Square Neck Carriage Bolts Screws with Nuts and Washers for Machinery Industry