Redner's Markets Weekly Ad 101 Held Drive, Northampton, PA
While they don't have a huge amount of inventory or options of products, they usually have exactly what you need. Not being a warehouse with registers means you're in and out pretty quickly. The staff is friendly, knowledgeable and always eager to help you find what you're looking for.
Personally, I like the loose hardware (nuts, bolts, and washers) when I'm making or repairing something. I can get just what I need to finish the product without having boxes of hardware laying around that I'll probably never use or need again.