Ex: Interference Checking

Change some parts to darker color to determine easily
Create a layer Interference in red color

Home tab > Solid Editing panel > Interfere

Select the 1st set of the part, press Enter

Select 2nd set of part, press Enter

The interference part show in red color

Uncheck Delete interference objects created on Close

Click Close

The interference part show in red

Home tab > Solid Editing panel > Subtract

Select the bolt, press Enter

Select the interference part, preaa Enter

Home tab > Solid Editing panel > Interfere
Select the same bolt, press Enter
Then, select the other part, press Enter

The interference part show in red

Uncheck Delete interference objects created on Close

Click Close

The interference part show in red

Home tab > Solid Editing panel > Subtract

Select the bolt, press Enter

Then select the interference part, press Enter

The subtracted bolt and fix exactly in the hole of the 2 mechanical parts