Bolts are widely used in detachable connections in mechanical manufacturing, and are generally used in conjunction with nuts (usually apply with one or two washers).
There are many kinds, including hexagon head and square head. Hexagon head bolts are the most common one. They are classified into A, B, C and other product grades according to their manufacturing accuracy and product quality.
T-slot bolts are mostly used in places that need to be disconnected frequently. Anchor bolts are used to fix the frame or motor base in the cement foundation.
High-strength bolts are generally used for friction-type connection of steel structures such as buildings, bridges, towers, pipeline supports and hoisting machinery.
