Choosing the Right Thread Taps | Epic Tool
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Choosing the Right Thread Taps

ThreadSTAR Threadmills

Thread taps are essential in machining and manufacturing, creating internal threads in various materials. Choosing the correct type of thread tap is crucial for achieving the desired thread quality and ensuring efficient production. Here’s an in-depth look at the different types of thread taps and their applications.

Straight Flute Taps (Hand Taps)

Straight flute taps, or hand taps, are traditional taps with straight flutes running parallel to the tap’s length. They are versatile and ideal for general-purpose tapping, particularly in through-holes. Hand taps are commonly used in manual threading operations and short production runs.


  • Versatile for various applications
  • Easy to use manually
  • Suitable for both through-holes and blind holes

Spiral Point Taps (Bull Nose Taps)

Spiral point taps, also known as bull nose taps, have a spiral cut at the tip and straight flutes. The spiral design pushes chips ahead of the cutting action, making these taps effective for through-hole applications. This design reduces chip clogging and increases cutting speed, enhancing productivity.


  • Efficient chip removal
  • Reduced risk of chip clogging
  • Increased cutting speed

Spiral Flute Taps (Gun Taps)

Spiral flute taps have helical flutes that lift chips out of the hole as they cut. They are particularly well-suited for blind holes, where chip evacuation is challenging. These taps are ideal for materials that produce long, stringy chips, such as aluminum and soft steels.


  • Effective chip evacuation
  • Ideal for blind holes
  • Suitable for materials with long, stringy chips

Roll Form Taps (Thread Forming Taps)

Roll form taps create threads by deforming the material rather than cutting it. This process produces stronger threads with a smoother surface finish and no chips. Roll form taps are ideal for ductile materials and are widely used in high-strength applications, such as aerospace and automotive industries.


  • Stronger threads
  • No chips produced
  • Smoother thread surface finish

Choosing the Right Thread Tap

Selecting the appropriate thread tap depends on factors such as the material being tapped, the type of hole, and the production volume. Key considerations include:

  1. Material: Hard materials may require taps with special coatings to reduce wear.
  2. Hole Type: Through-holes and blind holes have different chip evacuation needs.
  3. Production Volume: High-volume production may benefit from more efficient taps like spiral point or roll form taps.


Understanding the different types of thread taps and their specific applications can significantly enhance machining operations. You can achieve higher thread quality, improve productivity, and extend tool life by choosing the right tap.

For more insights and to explore our range of high-quality thread taps, contact Epic Tool today!