HSSE Spiral Tap Din371 M4*0.7 Grewin

Spiral Flute Tap M4 DIN 371 – HSSE Taps with Black-Grey Coating for Blind Hole Threading

The Spiral Flute Tap M4 DIN 371 is a high-performance threading tool made from premium HSSE (High-Speed Steel with Cobalt). Designed for blind hole threading in steel, stainless steel, and non-ferrous metals, this tap features a spiral flute geometry for excellent chip evacuation and smooth threading in deep or closed holes.

✅ Key Features:

• Thread Size: M4× 0.7

• Standard: DIN 371 (reduced shank)

• Material: HSSE (5% cobalt high-speed steel)

• Flute Type: Spiral flute – ideal for blind holes

• Coating: Black-grey (oxidized or TiCN-like) for increased wear resistance and lubricity

• Cutting Direction: Right-hand

• Application: Threading in steel, stainless steel (V2A/V4A), aluminum, and non-ferrous alloys

• Shank Type: Reduced DIN 371 shank with square drive

⚙️ Best For:

• CNC and manual threading of blind holes

• Use in high-precision industrial and workshop environments

• Excellent chip removal, especially in soft or ductile materials

💡 Why Choose Spiral Flute Tap M4 DIN 371?

• Spiral design efficiently removes chips from blind holes

• HSSE ensures durability and thermal resistance

• Black-grey coating reduces friction and prolongs tool life

• Compatible with tapping holders and collets on CNC or drill presses