RUKO HGB-DIN352-HSS-60°-M18x2.50mm Hand Tap Set, 3-Piece, Metric Coarse Thread, High-Speed Steel, DIN 352

Cutting precise M18 metric coarse threads by hand demands a tap set that stays sharp, aligns cleanly, and follows the DIN 352 standard without wandering. The RUKO GMBH HGB-DIN352-HSS-60°-M18x2.50mm three-piece hand tap set solves exactly that: pre-cutter, second cutter, and finish cutter work in sequence to produce a 60° thread profile with a 2.50 mm pitch in through holes and blind holes alike.

Who is it for

Machinists, metalworkers, and maintenance technicians who thread unalloyed and low-alloyed steels up to 800 N/mm², malleable cast iron, or non-ferrous metals. It suits workshop environments where a square drive tap wrench is already on hand.

Main features

• Three-piece hand tap set: pre-cutter, second cutter, finish cutter for progressive thread cutting.
• High-speed steel (HSS) body with bright, uncoated finish for durability and easy chip flow.
• DIN 352 geometry with 60° thread angle and right-hand cut.
• Metric coarse thread M18 × 2.50 mm, tolerance class ISO 2 (6H).
• Square drive shank for secure grip in standard tap wrenches.

Specifications

• Product type: Hand tap set
• Standard: DIN 352
• Material: High-speed steel (HSS)
• Thread type: Metric coarse thread
• Nominal thread diameter: M18
• Thread pitch: 2.50 mm
• Thread angle: 60°
• Number of pieces: 3 (pre-cutter, second cutter, finish cutter)
• Cutting direction: Right-hand cut
• Shank type: Square drive
• Tolerance class: ISO 2 (6H)
• Surface finish: Bright (uncoated)
• Total length (L1): 110 mm
• Thread length (L2): 38 mm
• Shank diameter (d2): 14 mm
• Square drive (a): 11 mm
• Recommended core hole diameter: 15.50 mm
• Suitable materials: Unalloyed and low-alloyed steels up to 800 N/mm², malleable cast iron, non-ferrous metals

Tips

Drill the core hole to 15.50 mm before tapping. Use a suitable cutting oil and reverse the tap every half turn to break chips, especially in blind holes. For best tool life, keep cutting speed low and align the tap perpendicular to the workpiece.