These bolts feature a square head design for use in heavy-duty applications. Grade 5 Steel construction is quenched and tempered to be hard and durable. However, the grade 5 bolts are more malleable than Grade 8, allowing them to better withstand shear force. Grade 5 Steel Square Head Bolts are the UNC equivalent of Metric Class 8.8 Steel Square Head Bolts.
Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.