Does The Aluminum Flat Head Machine Screws Need A Flat And Spring Washer?

Normally, the aluminum flat head machine screws do not require the use of a washer. The flat head phillips screw is a type of screw that has a flat head and is countersunk or semi-recessed.

Does the aluminum flat head machine screws use a flat spring washer? Why do you not need to use a flat washer spring washer for a flat head countersunk head screw? To understand this problem, let us first understand the role of flat washers and spring washers!

Flat washer:

1. Increase the contact area between the screw and the machine.
2. Eliminate damage to the machine surface when the spring washer is unloaded. When using, it must be a flat washer after the spring washer, the flat washer is next to the surface of the machine, and the spring washer is between the flat washer and the nut. The flat washer is to increase the force area of the screw. The function of the spring washer is to prevent the screw from loosening and play a certain buffer protection when the force is applied.

The role of the spring washer:

1. When the nut is tightened, the spring washer gives the nut an elastic force and abuts the nut, so that the nut does not fall off easily.
2. The spring washer is generally not used, unless the surface of the fastener and the mounting surface is to be used together with the flat washer and the spring washer.
3. The flat washer is generally used in the link. The texture is relatively soft, and the texture is relatively hard and brittle. Its main function is to increase the contact area and disperse the pressure to prevent the soft texture from being soft.

Understand the role of the elastic washer and the flat washer. Now I know why the aluminum flat head machine screws does not need a flat spring washer. According to the national standard, once the flat spring washer is used, it cannot be dull and lost. The meaning of the aluminum flat head machine screws.

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