When there is a significant variation in material dimensions, it is crucial to understand the root cause. By having the engineering and quality staffs visit the supplier's facility, they can review and possibly improve the supplier’s processes. This collaborative approach helps in identifying and solving the problem, ensuring future shipments meet specifications and maintaining the relationship with the supplier.

References

ISM (Institute for Supply Management). Supplier quality management.

APICS (Association for Supply Chain Management). Supplier relationship management best practices.