Attention! Fullerton will be closing early on Friday, April 19th at 1:30 PM (EST). Shipping Cut-Off Times: FedEx – 11:30 AM (EST), USPS – 12:30 PM (EST), UPS – 12:45 PM (EST).


Fullerton Tool Company     Countersinks


Fullerton Tool offers a selection of carbide countersinks for use in various materials and with various angles. Countersinks are circular cutting tools that allow a manufacturer to cut a conical hole in an object that typically allows the head of a bolt or screw to be countersunk. In addition to a strong selection of standard items, Fullerton Tool also designs carbide countersinks to meet specific manufacturer requirements.


  • Solid Carbide Cutting Heads
  • Versatile Selection
  • Various Coatings Available
  • Standards and Full Specials