We have tinkered with RFEM 6 a little bit and present a new feature here. To determine the shear resistance of bolts, you can use the Steel Joints add-on for RFEM 6 to specify whether there is a shaft or a thread in the shear plane. ☝️
More About RFEM 6:
http://www.dlubal.com/rfem
More Features of RFEM 6:
https://www.dlubal.com/en-US/support-and-learning/support/product-features?family=rfem-6
More About Steel Joints Add-on for RFEM 6:
https://www.dlubal.com/en-US/products/add-ons-for-rfem-6-and-rstab-9/connections/steel-joints/steel-joints-features
Download the free trial version and learn RFEM 6:
