MASTERTAP M8 spiraalikierre-kierretappi DIN 371 6HX HSSE-PM kirkas

Machine tap for through holes, engineered from powder-metallurgy high-speed steel with cobalt for exceptional wear resistance and a 45° spiral flute that efficiently evacuates chips forward. The MASTERTAP series delivers reliable thread production in a wide range of materials, from steels to superalloys.

Advantages

HSSE-PM substrate provides superior toughness and edge retention compared to conventional HSS, extending tool life in demanding applications. The 45° helix angle ensures smooth chip flow in through-hole threading, reducing torque and the risk of chip packing. A bright finish offers clean cutting performance without coating, ideal for general-purpose use. The C chamfer form (2-3 threads lead) balances ease of starting with thread quality.

Suitable for

• Through-hole threading in steels, stainless steels, cast iron, non-ferrous metals, and superalloys
• CNC machining centres, tapping machines, and manual equipment with rigid tapping cycles
• Production environments requiring consistent thread quality and high tool life
• Threading M8 x 1.25 mm threads to tolerance class 6HX

Key specifications

• Thread size: M8
• Thread pitch: 1.25 mm
• Standard: DIN 371
• Tolerance class: 6HX
• Material: HSSE-PM (powder metallurgy high-speed steel with cobalt)
• Chamfer form: C (2-3 threads lead)
• Flute type: Spiral flute, 45° helix angle
• Cutting direction: Right-hand
• Coating: Uncoated / bright finish
• Overall length: 90 mm
• Thread length: 18 mm
• Shank diameter: 8.0 mm
• Square drive: 6.2 mm
• Series: MASTERTAP

Recommendations

For optimal results, use with rigid tapping cycles and appropriate coolant/lubricant. Ensure proper alignment and chip evacuation, especially in deep through holes. Suitable for a wide range of materials including steels, stainless steels, cast iron, non-ferrous metals, and superalloys.