Lee Valley Tools - Woodworking Hardware, Cabinetmaking Hardware
Woodworkers Supply - Kitchen Cabinet Hardware & Hinges | Woodworker's Hardware
Side Mount Murphy Bed Hardware-Select Size - Rockler Woodworking Tools
Everything you wanted to know about screws, nuts, bolts, etc. More
Woodworking Plans and Solutions - Woodworking Tools - Woodworking Hardware
Specifically tell you what hardware to buy to make your own barn door hardware and explains how to make it.
Home Hardware - Potato Bin for your kitchen cornucopia
$389 Murphy / Wall Bed - Mechanism and legs. for the skilled DIY handiperson.
Workshop Supply - Drop leaf supports are extremely handy for supporting fold away table tops and work surfaces.