Hrmm. You are asking how to download DIN and ISO products...... you are going to have to give a lot more information.
Are you talking about Toolbox fasteners?
This is a little outdated, but it still has some good info:
A Complete Guide to Using SOLIDWORKS Toolbox
Or, are you talking about new fasteners that aren't listed in the toolbox?
Normally my resource is McMaster-CARR: McMaster-CARR
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