RUKO KGB-Bit-UC-FLS-HSS-M3x0.5 Machine Tap Spiral Point Form C DIN 371 ISO 2 (6H) for Through Holes

This RUKO machine tap stands out with its spiral point design, which pushes chips forward—ideal for through-hole threading in steel, non-ferrous metals, and cast iron. The HSS-E cobalt steel construction provides high wear resistance and heat stability, making it a reliable choice for demanding workshop tasks.

Highlights

• Spiral point flute geometry for efficient chip evacuation in through holes
• HSS-E cobalt steel for high hardness and heat resistance
• Metric M3 thread with 0.5 mm pitch, tolerance class ISO 2 (6H)
• Form C chamfer (2-3 threads) for easy starting
• Square shank for secure drive and torque transmission

In daily use

The tap cuts clean, accurate threads in a single pass, and the spiral point design reduces clogging, allowing faster threading cycles. Its DIN 371 compliance ensures compatibility with standard tap holders and collets.

Full specifications

• Tool Type: Machine Tap
• Thread Type: Metric Standard Thread (M)
• Nominal Thread Diameter: M3
• Thread Pitch: 0.5 mm
• Material: HSS-E (High-Speed Steel with Cobalt)
• Standard: DIN 371
• Tolerance Class: ISO 2 (6H)
• Chamfer Form: Form C (2-3 threads)
• Flute Type: Spiral Point
• Application: Through Holes
• Recommended Material: General Purpose Steel, Non-Ferrous Metals, Cast Iron
• Surface Treatment: Uncoated
• Drive Type: Square Shank
• Shank Diameter (d2): 3.5 mm
• Square Drive Size (k): 2.7 mm
• Overall Length (l1): 56 mm
• Thread Length (l2): 11 mm
• Number of Flutes: 3

Final note

A professional-grade tap for through-hole threading, built to last and deliver consistent results.