McMaster.com does provide options for customers to access their order history, including past invoices. Typically, customers can log into their online account, where they may find a section dedicated to order history or order details. This section generally allows users to view previous orders, including associated invoices. If a customer has not set up an online account, it may be advisable to gather any order confirmation emails, as these often include invoice details. Additionally, the website may feature resources or links regarding account management that could guide users through the process of retrieving past invoices. It is always a good idea for customers to explore the current web page for specific instructions or information related to accessing their order history.