Hypersizer V5.6.38
Yes the default characteristic dimension can be changed.
In the database window, right click on the user project or workspace name
Then select "Backdoor Data" from the pull down menu
Find the bolted joint section in the backdoor form
In the project value column enter the desired characteristic dimension Do
If the user wants to set up the characteristic dimension for all projects, then edit the Hypersizer template backdoor settings . The characteristic dimension can also be input on the orthotropic allowables form, on the joints and holes TAB.