best practice for fastener management in collaborative environment? Our fasteners automatically change size when opening a model on a different computer

We would like to know how best to handle fastener toolboxes when working in a collaborative environment. We have heard network toolboxes are not always the best way? Advice would be appreciated! At the moment our fastener sizes randomly change when you open the model on a different computer. No warning is given and we think this issue is not related to recent upgrades.

Thanks!

SolidworksParts And Features