1. Straight Fluted Hand Taps
About: These are general purpose taps used for a wide variety of hand and machine tapping applications. They are available, in most cases, in taper, plug and bottoming chamfers and in various numbers of flutes.
2. Spiral Pointed Taps
About: These taps have a special angular grind at the point which shears chips and drives them ahead of the tap. Advantages are reduced tapping torque and increased speed in through hole tapping.
3. Spiral Fluted Taps
About: These taps are manufactured with spiral flutes for increased chip clearing efficiency in soft materials in which stringy chips are generated. Especially useful in tapping deep or blind holes, and in bridging keyways, these taps are available with regular or high helix flutes.
4. Roll Forming Taps
About: Roll forming taps generate threads by displacing rather than cutting metal, thereby eliminating or greatly reducing chips. They are especially useful for applications in which chips cannot be tolerated. YMW-USA roll taps are designed to allow tapping harder and tougher matierals than have been successfully tapped with other forming taps.
5. Extra LengthTaps
About: These taps have a special angular grind at the point which shears chips an YMW-USA produces, as standard and special, two different types of taps with extra long shanks that permit tapping in deep or obstructed areas. These are extension taps being offered in spiral point and spiral flute.
6. Pipe Taps
About: Taps for internal threading of pipe, pipe fittings, or holes in which threaded pipe is to be assembles are pipe taps. The types of pipe taps manufactured by Yamawa for YMW-USA as standard include: Zelx SS Taper Pipe Taps, NPT Taper Pipe Taps in regular or interrupted thread; Zelx Mold NPT Taper Pipe Taps for hardened steels, Hand Tap design NPT Taper Pipe Taps, and Stright Pipe Taps.
7. Interrupted Thread Pipe Taps
About: Interrupted thread pipe taps are manufactured with alternate teeth removed on adjacent lands (with the exception of the first few threads at the point). Designed for tapping certain tough metals or those which tend to tear or load the cutting teeth, these taps are to be used only when regular full thread taps fail.