The big problem I have with McMaster Carr is due more to my ignorance than their product. You need to know the technical name of the fastener if you want to find it without having to browse dozens of pages looking for it. Since most of the fastening done in my long career was by using adhesives I am not well versed in the "correct" names of many esoteric fasteners. My frustration in trying to find items in McC leads me to stay away unless absolutely necessary.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.