RUKO HGB-sarja DIN 352 HSSCo 60° M8 x 1,25 käsikierretappisarja

Cutting internal threads by hand in tough materials like stainless steel demands taps that stay sharp and resist breaking. The RUKO HGB Set DIN 352 HSSCo 60° M8 x 1.25 provides a three-piece hand tap set made from high-speed steel with cobalt (HSSCo), engineered for reliable thread cutting in steel, stainless steel, cast iron, and non-ferrous metals.

Who is it for

Machinists, metalworkers, and maintenance technicians who need to create or repair M8 x 1.25 metric threads in through or blind holes. The set is suitable for both professional workshops and demanding DIY applications where precision and durability are required.

Main features

• Three-piece set: taper, second, and bottoming taps for complete thread cutting.
• HSSCo material with cobalt for enhanced heat resistance and longer tool life.
• Metric thread M8 x 1.25 with 60° thread angle, conforming to DIN 352 standard.
• Right-hand cutting direction, square shank for secure holding in tap wrenches.
• Bright surface finish for clean cutting and corrosion resistance.

Specifications

• Thread size: M8
• Thread pitch: 1.25 mm
• Standard: DIN 352
• Material: HSSCo
• Number of pieces: 3
• Thread tolerance: ISO 2 (6H)
• Cutting direction: Right-hand
• Thread angle: 60°
• Shank type: Square
• Core hole diameter: 6.8 mm
• Application: Through and blind holes
• Recommended materials: Steel, stainless steel, cast iron, non-ferrous metals

Tips

Use a suitable cutting oil or tapping fluid to reduce friction and improve thread quality. For blind holes, start with the taper tap, then the second tap, and finish with the bottoming tap to achieve full thread depth. Ensure the core hole is drilled to 6.8 mm before tapping.