RUKO HGB Set 2-Piece DIN 2181 Hand Tap Set M28x1.5 Metric Fine HSS-G

Machinists and maintenance technicians working on metric fine threads will appreciate this RUKO hand tap set for cutting M28x1.5 threads in steel, cast iron, and non-ferrous metals. The set includes a taper tap for starting threads and a bottoming tap for finishing blind holes, both made from high-speed steel with a ground finish for clean, accurate cuts.

Key specifications

• Thread size: M28x1.5 (metric fine)
• Standard: DIN 2181
• Material: High-speed steel (HSS-G)
• Set contents: Taper tap (Form A) and bottoming tap (Form C)
• Cutting direction: Right-hand
• Tolerance class: ISO 2 (6H)
• Recommended core hole diameter: 26.5 mm
• Overall length: 130 mm
• Thread length: 45 mm
• Shank diameter: 22 mm
• Square drive: 17 mm

Why choose it

The taps are suitable for materials up to 900 N/mm² tensile strength, covering unalloyed and alloyed steels, cast iron, and non-ferrous metals. The ground flutes reduce friction and improve chip evacuation, while the two-piece set handles both through holes and blind holes efficiently.

Ideal use cases

• Creating new M28x1.5 threads in machinery repair
• Chasing or restoring damaged fine threads
• Threading blind holes where a bottoming tap is required

Good to know

For best results, use a suitable cutting oil and pre-drill with a 26.5 mm core hole. The taps are designed for manual use with a tap wrench.