Tap Drill Set 2.5mm-10.2mm HSS 7pc for M3-M12 Taps

A 7-piece tap drill set covering drill sizes from 2.5mm to 10.2mm for use with M3 to M12 taps. This HSS drill bit set gives you the commonly used drill diameters needed before cutting internal threads in metal and other suitable materials.

Used for preparing holes before tapping, this set suits workshop jobs, garage repairs, fabrication work, maintenance tasks and general engineering use. It is handy when replacing damaged threads, making new threaded holes, or carrying out fitting and repair work where the correct tap drill size matters. For anyone doing regular threading work, having the matching drill sizes together saves time and helps avoid reaching for unsuitable bits.

The set includes seven specific twist drill sizes: 2.5, 3.3, 4.2, 5.0, 6.8, 8.5 and 10.2mm, covering the standard requirements for M3, M4, M5, M6, M8, M10 and M12 taps. These HSS metal drill bits are suitable for repeated use in general metalworking tasks, while the selected size range keeps the key tap drill sizes together in one set. That makes it easier to stay organised during threading jobs, especially when moving between different tap sizes on repair or fabrication work.

Tap drill set specifications

• Contents: 7-piece HSS twist drill set.
• Size range: Includes 2.5mm to 10.2mm drill bits.

Drill sets for tapping preparation

• Covers: Matching sizes for M3 to M12 taps.
• Material: HSS construction for drilling before tapping operations.
• Application: Useful for thread preparation, repair work and general workshop use.

A practical choice for regular threading, repair and metalworking jobs.