How to choose the corresponding washer for bolt or screw connection?
For bolt or screw connection, select the corresponding washer according to its specifications (generally the nominal diameter).
The specifications of the corresponding washers correspond to the specifications of the bolts and screws. These are standard parts and are good choices.
Bolt: A type of fastener consisting of a head and a screw (cylinder with external thread). It needs to be matched with a nut to fasten and connect two parts with through holes.
Because bolts are also a kind of railway fittings, railway fittings are part of railway lines. The track referred to here includes steel rails, sleepers, connecting parts, track beds, anti-climbing equipment, rail supports, and turnouts.
As a holistic engineering structure, the track is laid on the roadbed, which plays a guiding role in the operation of the train, and directly bears the huge pressure of rolling stock and its load. Under the power of train operation, its various components must have sufficient strength and stability to ensure that the train runs safely, smoothly and uninterrupted at the specified maximum speed.