MAYKESTAG HSS-Co5 Machine Tap MF 6 x 0.5 DIN 374 Form B

Maykestag HSS-Co5 Machine Tap MF 6 x 0.5 DIN 374 Form B

Professional HSS-Co5 machine tap for producing MF 6 x 0.5 metric fine internal threads in through holes, manufactured to DIN 374 with an ISO2 (6H) thread tolerance and Form B 3.5–5P chamfer for controlled, accurate thread cutting.

The Maykestag Code 5154 machine tap is designed for accurate production of metric fine threads in professional machining applications. This MF 6 tap has a fine 0.5mm pitch and is manufactured from HSS-Co5 cobalt-alloyed high-speed steel, providing the toughness, heat resistance and cutting-edge durability required for dependable thread production. Its Form B chamfer provides a progressive cutting lead over approximately 3.5 to 5 thread pitches, making the geometry particularly suitable for through-hole tapping.

Product highlights

• MF 6 x 0.5 thread: Produces a 6mm nominal metric fine internal thread with a precise 0.5mm pitch.
• HSS-Co5 construction: Cobalt-alloyed high-speed steel offers excellent toughness, heat resistance and cutting-edge durability for professional tapping.
• DIN 374 standard: Manufactured to the recognised dimensional standard for this type of metric fine machine tap.
• ISO2 (6H) tolerance: Designed to produce the commonly specified 6H internal metric thread tolerance class.
• Form B chamfer: A 3.5–5P cutting lead provides gradual tooth engagement and controlled chip formation during through-hole tapping.
• Through-hole application: The Form B geometry is designed for applications where chips can continue ahead of the tap and exit the hole.
• 5.5mm tap-drill diameter: Maykestag specifies a 5.5mm pre-drilled hole for this MF 6 x 0.5 tap.
• Precision dimensions: 80mm overall length with a 14mm cutting section, 4.5mm shank and 3.4mm square drive.

Designed for Accurate Fine-Thread Tapping

With a nominal MF 6 thread diameter and 0.5mm pitch, this tap is intended specifically for fine-pitch internal threads rather than a standard coarse M6 thread. The Form B 3.5–5P chamfer gradually brings the cutting teeth into contact with the workpiece, distributing the cutting load over several teeth and helping the tap enter the prepared hole smoothly. Using Maykestag&s specified 5.5mm tap-drill diameter, together with the correct cutting speed, lubrication and machine alignment, helps achieve accurate thread form, dependable tool life and a consistent finished thread.