Hi, It depends on your specific case. For example, if you are looking to study the bolts/immediate surroundings or if you are worried that the bolts might fail, it wouldn’t make sense to greatly simplify the bolts. But if the bolts are just there to transfer the load from one part to another and your regions of interest are far, you won’t gain much from capturing them as accurately as possible. See e.g. the Saint-Venant’s Principle.