RUKO HGB-DIN352-HSS-60°-7/8 Metric Coarse Threading Tap M8 x 1.25 mm, HSS-G, DIN 352, Form C, Right-Hand

This threading tap cuts metric coarse threads with a 60° thread angle, made from ground high-speed steel (HSS-G) for clean, accurate threads in through and blind holes. The M8 x 1.25 mm size is a common choice for general-purpose threading in steel and other machinable metals.

Advantages

Ground flutes and a bright finish reduce friction and chip adhesion, while the Form C chamfer with 2-3 tapered threads eases starting and distributes cutting force. The three-flute design provides good chip evacuation and stable guidance in the hole.

Suitable for

• Cutting M8 x 1.25 mm metric coarse threads
• Through holes and blind holes
• General-purpose threading in steel, non-ferrous metals, and cast iron
• Manual tapping with a tap wrench or machine tapping

Key specifications

• Thread type: Metric coarse
• Nominal diameter: M8
• Thread pitch: 1.25 mm
• Material: HSS-G (ground high-speed steel)
• Standard: DIN 352
• Chamfer form: Form C (2-3 threads)
• Cutting direction: Right-hand
• Tolerance class: ISO 2 (6H)
• Overall length: 70 mm
• Thread length: 22 mm
• Shank diameter: 6.0 mm
• Square drive size: 4.9 mm
• Number of flutes: 3
• Thread angle: 60°
• Recommended pilot hole diameter: 6.8 mm
• Surface treatment: Bright (uncoated)

Recommendations

Use a 6.8 mm drill for the pilot hole and a suitable cutting fluid for best tool life. Pair with a tap wrench that fits the 4.9 mm square drive.