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How do I apply a promo code at checkout?

Asked 2 years ago
To apply a promo code at checkout on McMaster.com, you will want to follow a straightforward process. First, browse the website for the items you wish to purchase and add them to your shopping cart. Once you are ready to complete your order, proceed to the checkout page. During this process, there will typically be a designated field labeled for promo codes or discount codes. Enter your specific promo code in that field exactly as it appears, ensuring there are no typing errors. After entering the code, look for a button to apply or submit the discount. The system will then validate the code and, if it is valid, the discount will be reflected in the total amount. If you have trouble locating the promo code field, it is advisable to explore the current checkout page for guidance.
Answered Sep 20th 2025

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