2158 HSSE UNF Spiral Flute Machine Tap

2158 HSSE UNF Spiral Flute Machine Tap

Spiral-flute tap for threading blind holes.

Key Features:

• Tool material: High-speed steel (HSSE)
• Standard / manufacturer designation: DIN 371
• Thread type: UNF
• Chamfer form: C(2-3)
• Geometry / design: R35°
• Tolerance / class: 2B (see selected variant)
• Working depth: 2.5xD
• Helix angle: 35°
• Reinforced shank

Recommended Materials:

P Steels

• Steels <800 N/mm² – Optimal suitability
• Steels <1,000 N/mm² – Alternative suitability

M Stainless steels

• Stainless steels <950 N/mm² – Alternative suitability

K Cast iron

• Cast iron <800 N/mm² – Alternative suitability

N Non-ferrous materials

• Aluminum (Al) – Alternative suitability
• Copper and copper alloys (Cu) – Optimal suitability
• Plastics – Alternative suitability

Thread size and tolerance are shown in the selected variant. Product photos are representative of the series.