A general set of screws have a few nuts, bolts, washers?
A screw nut a flat washer but a spring washer
You want to see the specific requirements and uses. There is also a nut, a bolt, and a flat pad
Different bolt standards have different supporting methods, such as GB1228 big six angle a set of bolts contains 1 bolts a nut, and the gasket, and the shear bolt type is the 1 set of the bolts of a nut, the 1 gasket 1
