RUKO HGB-DIN352-HSS-60°-M12x1.75mm Hand Tap Set, 3-Piece, Metric Coarse Thread, HSS-G Ground, Bright Finish

This RUKO hand tap set is engineered for cutting metric coarse threads in unalloyed and low-alloyed steels up to 800 N/mm². Unlike single taps, the three-piece set with taper, second, and bottoming taps allows progressive thread cutting for through and blind holes. The HSS-G ground high-speed steel ensures clean, precise threads and long tool life. The 60° thread angle and ISO 2 (6H) tolerance class provide standard-compliant threads. The bright finish reduces friction and improves chip evacuation. The square shank offers a secure grip in tap wrenches.

Highlights

• Three-piece set: taper tap (Form A), second tap (Form B), bottoming tap (Form C)
• Ground HSS-G high-speed steel for durability and precision
• Metric coarse thread M12 × 1.75 mm, DIN 352 standard
• Straight flutes, right-hand cut, bright uncoated surface
• Square shank for reliable torque transmission

In daily use

The taper tap starts the thread, the second tap deepens it, and the bottoming tap finishes threads close to the bottom of blind holes. The recommended core hole diameter is 10.2 mm. The set is suitable for maintenance, repair, and production work in steel components.

Full specifications

• Product type: Hand tap set
• Standard: DIN 352
• Thread type: Metric coarse thread
• Thread size: M12
• Thread pitch: 1.75 mm
• Material: HSS-G (high-speed steel, ground)
• Number of pieces: 3
• Set contents: Taper tap (Form A), second tap (Form B), bottoming tap (Form C)
• Thread angle: 60°
• Shank type: Square shank
• Shank diameter (d2): 9.0 mm
• Square drive size (k): 7.0 mm
• Overall length (L1): 90 mm
• Thread length (L2): 29 mm
• Recommended core hole diameter: 10.2 mm
• Application material: Unalloyed and low-alloyed steels up to 800 N/mm²
• Surface finish: Bright (uncoated)
• Flute type: Straight flutes
• Tolerance class: ISO 2 (6H)
• Cutting direction: Right-hand cut

Final note

Precision-ground HSS taps for reliable thread cutting in steel, conforming to DIN 352.