RUKO HGB-DIN352-HSS-60°-Nr.8 käsikierretappi M8 x 1,25mm DIN 352 HSS blank

Threading holes in tough materials like steel and cast iron demands a tap that stays sharp and accurate. The RUKO HGB-DIN352-HSS-60°-Nr.8 is a single hand tap engineered to cut clean, precise metric ISO coarse threads in through and blind holes, reducing the risk of breakage and rework.

Who is it for

Machinists, metalworkers, and maintenance professionals who need a dependable HSS tap for general-purpose threading in steel, cast iron, and non-ferrous metals. It suits both manual and light machine tapping where a 6H tolerance class is required.

Main features

• Metric ISO coarse thread M8 with 1.25 mm pitch, conforming to DIN 352.
• High-speed steel (HSS) body with bright finish for durability and chip evacuation.
• Straight flutes and 4 flutes ensure efficient cutting and debris removal.
• Right-hand cut direction for standard threading operations.
• Square drive size 4.9 mm fits standard tap wrenches.

Specifications

• Thread type: Metric ISO coarse thread
• Nominal diameter: M8
• Thread pitch: 1.25 mm
• Standard: DIN 352
• Material: High-speed steel (HSS)
• Thread angle: 60°
• Flute type: Straight flutes
• Application: General purpose for through and blind holes
• Tolerance class: 6H
• Overall length: 70 mm
• Thread length: 22 mm
• Shank diameter: 6.0 mm
• Square drive size: 4.9 mm
• Number of flutes: 4
• Surface treatment: Bright finish (uncoated)
• Recommended material: Steel, cast iron, non-ferrous metals
• Cutting direction: Right-hand cut
• Tap type: Single hand tap

Tips

Use a suitable cutting fluid when tapping steel to prolong tool life. For blind holes, clear chips frequently to avoid clogging. Pair with a tap wrench matching the 4.9 mm square drive.