RUKO HGB-DIN352-HSS-55° 3-Piece HSS Hand Tap Set, G 1/4 Inch, DIN 352, 55° Flank Angle, Bright Finish

Machinists and maintenance technicians rely on the RUKO HGB-DIN352-HSS-55° hand tap set for cutting precise internal threads in unalloyed and low-alloyed steels, non-ferrous metals, and plastics. This 3-piece set includes taper, plug, and bottoming taps, enabling you to start, deepen, and finish threads with confidence.

Key specifications

• Thread standard: G (BSP Parallel)
• Nominal thread size: 1/4 inch
• DIN standard: DIN 352
• Material: High-Speed Steel (HSS)
• Flank angle: 55°
• Threads per inch (TPI): 19
• Set type: 3-piece set (Taper, Plug, Bottoming)
• Cutting direction: Right-hand
• Total length (L1): 63 mm
• Thread length (L2): 20 mm
• Shank diameter (d1): 7 mm
• Square drive size (k): 5.5 mm
• Recommended core hole diameter: 11.4 mm
• Application materials: Unalloyed and low-alloyed steels, non-ferrous metals, plastics
• Surface finish: Bright

Why choose it

The set's HSS construction provides durability and heat resistance for repeated threading operations. The 55° flank angle conforms to BSP parallel thread standards, ensuring compatibility with G-series fittings. The bright finish reduces friction and improves chip evacuation.

Ideal use cases

• Creating internal threads for pipe connections and fittings
• Repairing or restoring damaged threads in metal components
• Threading holes in plastic or non-ferrous workpieces

Good to know

For best results, use a suitable cutting fluid and ensure the core hole is drilled to the recommended diameter of 11.4 mm. The set includes three taps to handle different stages of thread cutting: taper for starting, plug for general use, and bottoming for threads close to the bottom of blind holes.