1pc 1/4" Metric Screw Tap Drill bit

Thread Diameter
Our1/4" Metric Screw Tap Drill bit lets you to easily create threaded holes in metal. With the availability of 6 different sizes - M3, M4, M5, M6, M8, M10 - you have the flexibility to get tap through most metal components without breaking a sweat. Perfect for soft tapping through soft metal, aluminum, iron, and more. With its durable HSS construction, these drill bits will last you for many years of use. 
  • HSS tap drill bits
  • 6 different sizes available - M3 M4 M5 M6 M8 M10
  • Size: 

    M3 x 0.5: Total length: 55mm, Spiral length: 24mm, drill diameter: 2.5mm
    M4 x 0.7: Total length: 54mm, Spiral length: 24mm, drill diameter: 3.3mm
    M5 x 0.8: Total length: 58mm, Spiral length: 28mm, drill diameter: 4.2mm
    M6 x 1: Total length: 58mm, Spiral length: 28mm, drill diameter: 5.0mm
    M8 x 1.25: Total length: 59mm, Spiral length: 18mm, drill diameter: 6.8mm
    M10 x 1.5: Total length: 59mm, Spiral length: 20mm, drill diameter:8.5mm
    Square handle: 6.35mm