Tap Drill Size for NPT & NPTF Taper Threads
Tap Drill Size for NPT and NPTF Taper Threads

You got the job. You ordered and received material. You ordered and received taps and gages from North American Tool. The job is now out in the shop to be manufactured and the first operation is to produce a hole before tapping. How do you determine what tooling to do that with?
Holes before tapping pipe threads are produced either straight or tapered. The choice of method is
EnGAGE Yourself with Gages & Gaging
Now that you successfully produced a threaded part, how do you know if it’s too large, or too small? Just because the bolt screws into a threaded hole or a nut screws on to a threaded stud, doesn’t mean it’s in the specification. What confidence do you have that when your customer receives your part that their part will assemble with it?
This is where gages come into play. Gages determine if what was produced is somewhere between the required maximum and minimum size envelope. The use of limit type gages is the simplest way to accomplish
GWS Tool Group Announces Acquisition of North American Tool Corporation
The acquisition of North American Tool Corporation extends custom product capability into the threading space, a new offering for GWS that adds a powerful dimension to the already robust product and service portfolio.
Tavares, FL February 4th, 2020 – GWS Tool Group is pleased to announce it has acquired North American Tool Corporation (NATC). They represent the second add-on acquisition in 2020 for GWS.
Located in Northern Illinois, North American Tool is a world-class supplier of special taps, dies, and gages. From solid carbide thread mills to high-speed steel taps and thread gages, North American Tool delivers high-quality specialized threading