It's not uncommon for something like the following to occur:
I insert a 30mm stainless steel M6 socket bolt.
Then change my mind and decide to go for a 25mm one instead.
Re-open McMaster browser where it's still on the download page for the 30mm step file.
Discover there is no way to get back to the previous page where it would have been easy to navigate to a 25mm one.
Have to restart the bolt search from the top.
A simple "back" button in the browser would fix this.