Lightning doesn't just strike anywhere. It's only available from authorized Widia GTD (formerly Greenfield) distributors.

Widia GTD has harnassed the power and speed of its focused factories to produce and deliver quality special taps when you need them with its LIGHTNING™ Service. Committed to manufacturing the highest quality cutting tool in the shortest time possible, Widia GTD will quote, process, and release your order to the factory within minutes of your call. This quick response allows us to make and ship your order quickly, often with only a 24-hour lead time.


Our special taps can be used for tapping popular materials such as cast iron, aluminum or brass, and we can custom design tools to thread even the most difficult applications such as inconel, titanium and other high pressure alloys. When success is measured by accurate thread pitch diameters and good gage fits, you can depend on Greenfield for special taps made to your order.

Need a custom tap? Contact us for a copy of Widia GTD's 80-page Lightening Service catalog to assist you when placing your order.