How can I cancel or change my order?
To cancel or change an order placed on McMaster.com, it is important to act quickly, as once the order has been processed, making changes or cancellations may not be possible. Typically, customers can make modifications to their orders by logging into their account on the McMaster website, where order details can be accessed. If the order is still in the processing stage, there may be options available for editing the items, quantities, or shipping information.
If the order has already been shipped, this would mean that changes or cancellations would no longer be feasible. In such instances, customers may need to consult the return policy provided on the McMaster website to see how to proceed with returning any unwanted items after receiving them.
Additionally, it can be beneficial to look for contact information on the current webpage, as there might be direct assistance available for specific inquiries related to order modifications. Remember to have your order number handy to ensure a smooth process.

Answered Sep 20, 2025
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