Maykestag Speedtap Universal HSSE-V3 Machine Tap M33 Spiral Fluted DIN 376

Professional M33 x 3.5 Speedtap Universal machine tap manufactured from HSSE-V3, featuring 40° spiral-fluted geometry, a Form C chamfer and ISO2 (6H) thread tolerance for accurate metric ISO threading in blind holes.

The Maykestag Code 4671 Speedtap Universal is a spiral-fluted machine tap designed for producing metric ISO threads according to DIN 13. This M33 version has a 3.5mm thread pitch and is manufactured to DIN 376, combining a 40° spiral angle with a short Form C chamfer of 2–3 pitches. Its geometry is specifically designed for blind-hole threading, where effective chip evacuation is essential for reliable machining and consistent thread quality.

A spiral-fluted machine tap has helical flutes running around the cutting section of the tool. During blind-hole tapping, the spiral geometry helps guide chips back towards the entrance of the hole rather than pushing them deeper into the workpiece. The Code 4671 uses a pronounced 40° spiral angle together with Form C chamfer geometry for controlled and efficient machine tapping.

• Speedtap Universal series: Maykestag high-performance machine tapping range designed for dependable production threading.
• M33 x 3.5 metric thread: Produces M33 metric ISO threads with a 3.5mm pitch.
• DIN 376: Manufactured according to the specified DIN standard for this machine-tap series.
• HSSE-V3 cutting material: High-performance high-speed steel grade specified by Maykestag for the Code 4671 range.
• 40° spiral flutes: Designed to promote chip evacuation back towards the hole entrance during blind-hole tapping.
• Blind-hole geometry: Specifically designated by Maykestag for blind-hole threading applications.
• Form C chamfer: Short 2–3 pitch chamfer suited to controlled thread production in blind holes.
• ISO2 (6H) tolerance: Designed to produce metric ISO internal threads to the commonly used 6H tolerance class.
• Four-flute design: The M33 tap is manufactured with four cutting flutes.
• Recommended tap drill: Maykestag specifies a Ø29.5mm pre-drill diameter for this M33 x 3.5 tap.

Maykestag is an Austrian cutting-tool specialist focused on precision-manufactured drilling, milling, reaming and threading tools for professional machining. Accurate geometry, dimensional consistency and carefully selected cutting materials are especially important in machine tapping, where reliable chip control and consistent thread quality directly influence productivity and tool life.

The Code 4671 Speedtap Universal series combines HSSE-V3 cutting material, 40° spiral-fluted geometry and a Form C chamfer with precisely defined metric ISO thread tolerances. For this M33 version, Maykestag specifies a 3.5mm pitch, four flutes and a Ø29.5mm recommended tap-drill diameter.

Blind-hole tapping requires effective chip management because there is no opening beneath the thread through which chips can escape. The 40° spiral-fluted geometry of the Speedtap Universal is designed to transport chips back towards the entry side of the hole during machining. Combined with the short Form C chamfer and ISO2 (6H) thread tolerance, the Code 4671 provides a purpose-designed solution for accurate machine production of metric ISO internal threads.