Standardizing screws to just a few types extends beyond design. It simplifies logistics by reducing SKUs to purchase and manage. During assembly, it eliminates the cognitive load of selecting the correct screw, allowing technicians to build faster and with fewer errors, creating a more satisfying workflow.
When screw lengths differ by only a few millimeters, assemblers can easily use the wrong one. This may seem to fit correctly but results in insufficient thread engagement, compromising the product's structural integrity, especially under stress like thermal cycling.
To enforce a standard fastener length across parts, don't just change counterbore depth in the SolidWorks Hole Wizard. Instead, edit the feature's underlying sketch. Make the head clearance a driven dimension and explicitly define the material thickness under the screw head, forcing the feature to adapt.