Gasket under the nut
Thread Content
For pipe flanges and equipment flanges, after selecting the appropriate bolts and nuts, should a flat washer or a spring washer be used? There are also bolt washers on moving equipment – so what is the purpose of using washers in general? When is it really necessary to use washers? Are there any standards or specifications? What did the experienced master say? Feel free to discuss it in detail
Flat washers are used to distribute the preload applied to the bolts evenly across the flange. In addition to this function, spring washers also serve to prevent backsliding; bolts in moving equipment and areas subject to vibration must be equipped with spring washers, such as anchor bolts, bolt for bearing caps, and bolt for pump covers
It should be installed in places that are prone to vibration and experience frequent thermal expansion and contraction; this pad is called a anti-loosening pad
Go ahead and include them all if it’s not too much trouble; the benefits outweigh the drawbacks