RUKO HGB Set 2-Piece DIN 2181 Metric Fine Thread Tap Set M27 x 1.5 mm HSS-G

Cutting precise M27 x 1.5 mm metric fine threads in tough materials demands a tap set that stays sharp and accurate. This 2-piece HGB set from RUKO provides both a taper tap for starting threads and a plug tap for finishing them to the bottom of blind holes, all in high-speed steel ground for durability.

Who is it for

Machinists, metalworkers, and maintenance technicians who need reliable thread cutting in unalloyed and low-alloy steels, cast iron, and non-ferrous metals. Ideal for both through holes and blind holes where thread accuracy to ISO 2 (6H) tolerance is required.

Main features

• 2-piece set: taper tap and plug tap for complete thread cutting.
• Metric fine thread M27 x 1.5 mm to DIN 2181 standard.
• HSS-G (high-speed steel ground) for long tool life and clean cuts.
• Right-hand cutting direction for standard threading operations.
• Square shank for secure holding in tap wrenches.
• Bright finish, uncoated for general-purpose use.

Specifications

• Thread type: Metric Fine (MF)
• Nominal thread diameter: 27 mm
• Thread pitch: 1.5 mm
• Thread standard: DIN 2181
• Material: HSS-G
• Cutting direction: Right-hand
• Thread tolerance: ISO 2 (6H)
• Recommended core hole diameter: 25.5 mm
• Overall length: 140 mm
• Thread length: 45 mm
• Shank diameter: 20 mm
• Square size: 16 mm
• Number of flutes: 5
• Suitable for: Unalloyed and low-alloy steels, cast iron, non-ferrous metals

Tips

Use a suitable cutting fluid to extend tool life and improve thread finish. For blind holes, start with the taper tap and finish with the plug tap to ensure full thread depth. Always drill the core hole to the recommended diameter of 25.5 mm.