HSS Metric Hand Taps

Shop high-speed steel metric hand taps for cutting internal metric threads in steel, aluminum, and other suitable machinable materials. Metric hand taps are widely used in industrial equipment, automotive components, machinery maintenance, and fabrication.

Our selection includes standard and special metric thread sizes, with Qualtech and Tap America options. Metric taps are identified by nominal diameter and thread pitch in millimeters, such as M6 x 1.0, M8 x 1.25, and M10 x 1.5.

Need help finding the matching drill bit? Use our Metric Tap Drill Calculator or Tap and Drill Chart. You can also browse our Hand Tap and Drill Sets for available matched combinations.

Understanding Metric Hand Tap Sizes

Metric Thread Diameter

The M designation identifies the nominal thread diameter in millimeters. For example, an M8 tap produces a nominal 8 mm internal thread.

Metric Thread Pitch

Metric pitch is the distance between adjacent threads in millimeters. An M8 x 1.25 tap has a nominal diameter of 8 mm and a pitch of 1.25 mm.

Coarse and Fine Metric Threads

Metric threads are available in standard coarse and finer pitches. Always match both diameter and pitch to the fastener or existing threaded component.

Special Metric Thread Sizes

Some applications require less common metric pitches or diameters. Verify the complete thread specification before selecting the tap.

Choosing the Right Metric Tap

Select the correct metric diameter, pitch, and chamfer style for your application. Taper taps are useful for starting threads, plug taps are versatile for general-purpose threading, and bottoming taps are designed for threading closer to the bottom of blind holes.

Use our Metric Tap Drill Calculator to determine the drill size before tapping. For general tapping techniques and additional information, visit our Hand Taps Guide.