RUKO 31-Piece HSS-Co 5% Tap and Die Set Metric M3-M12

Cutting precise internal and external threads in tough materials demands tools that stay sharp and resist breakage. This RUKO 31-piece tap and die set answers that need with cobalt-alloyed HSS-Co 5% tools that handle unalloyed and alloyed steels, stainless steel, cast iron, and non-ferrous metals up to 1000 N/mm² tensile strength.

Who is it for

Machinists, metalworkers, and maintenance technicians who need a complete metric threading solution in a portable, organized case. The set covers the most common ISO metric sizes from M3 to M12, making it suitable for repair, prototyping, and production work.

Main features

• 31 pieces: hand taps (pre-tap, second tap, finishing tap) and round dies for each of 7 metric sizes: M3, M4, M5, M6, M8, M10, M12
• HSS-Co 5% high-speed steel with 5% cobalt for increased wear resistance and heat hardness
• Taps conform to DIN 352, dies to DIN 223
• Includes adjustable tap wrench and die stock, plus screw pitch gauge and screwdriver
• Sturdy metal case for protection and organization

Specifications

• Set type: Tap and die set
• Number of pieces: 31
• Material: HSS-Co 5%
• Thread type: Metric ISO (M)
• Thread sizes: M3, M4, M5, M6, M8, M10, M12
• Tap type: Hand taps (3-piece per size)
• Die type: Round dies
• Tap standard: DIN 352
• Die standard: DIN 223
• Included tap wrenches: 1 adjustable
• Included die stocks: 1 adjustable
• Additional tools: Screw pitch gauge, screwdriver
• Case material: Metal
• Recommended material hardness: Up to 1000 N/mm²
• Suitable materials: Unalloyed and alloyed steels, stainless steel, cast iron, non-ferrous metals

Tips

Use cutting oil suitable for the workpiece material to extend tool life and improve thread finish. For blind holes, start with the pre-tap and finish with the bottoming tap to achieve full thread depth.