Hello Gianluca,
Yes, you are correct. You can retrieve them by using user defined results.
In case you are unaware, Ansys has another feature called "bolt thread contact" which models a simple cylindrical face into threads numerically. This feature is available under contacts-->geometry modification. This might be the best approach for calculating MoS calculations accurately.
Geometric Modification (ansys.com)
3.8. Geometry Correction for Contact and Target Surfaces (ansys.com)
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