• General directories of Suppliers
  • ThomasNet
• Raw Materials
  • metals
    • Metal Supermarkets (there is both a national group and local stores)
    • Speedy Metals
  • Plasitcs
    • TAP Plastics
• Electronics
  • High Level
    • Adafruit
    • Sain Smart
    • Spark Fun
  • Low Level
    • Digikey
    • Mouser
  • Cabling
    • L-Com - connectors and wires
• General
  • McMaster
  • Grainger
  • Essentra
• Automation
  • Automation Direct
  • Beckhoff
  • Allen Bradley
• Machine components
  • Misumi
  • PIC Design
  • 80/20 - aluminum extrusion
  • Rexroth - linear motion and aluminum extrusion
  • Berg - motion and pins
• Pneumatics
  • SMC
• Tools
  • Grizzly - Wood and metal working
  • Shars
• Safety
  • Banner
  • Keyence
• Med Supplies
  • Qosina - disposables and leur locks
• Springs
  • Lee Springs
• Optics
  • Edmund Optics
• Shipping Supplies
  • U-Line
• Metrology
  • Epsilon - extensometers
• Prototyping
  • Shapeways
  • Stratasys Direct
  • ProtoLabs
  • quikparts