Some time ago we published a blog entitled, "CUTTING TAP CHAMFER 101”. It described what the chamfer’s purpose is, and what standard lengths are offered on off the shelf taps. They are Bottoming, Plug, and Taper. This blog builds on that information and goes into more depth so you can optimize the chamfer based on your application. Although we stock many common special taps with standard chamfer lengths, we can design and manufacture a special tap for your application. Optimizing the chamfer results in, longer tap life, reduced tapping torque, better finish, and make the difference
First things first, what is the root of a tap?
The root of a tap is the surface at the bottom of the thread-form that connects adjacent thread flanks and is expressed as width or as a diameter. The term root diameter is also called minor diameter, it’s one of those things, you say rain and I say precipitation, meaning the same thing.
The root of a tap, unless designed as a controlled root tap, normally does nothing, it is a