RUKO SPB-DIN338-HSS-TiN Twist Drill Bit 12.9 mm

Precision-ground 12.9 mm twist drill bit with TiN coating and 135° split point for self-centering starts in steel, cast iron, non-ferrous metals, plastics, and wood.

Overview

The RUKO SPB-DIN338-HSS-TiN Ø12.9 mm is a high-performance jobber-length twist drill bit manufactured from solid high-speed steel (HSS) and coated with gold titanium nitride (TiN). It conforms to DIN 338, featuring a cylindrical shank, right-hand spiral flute, and a 135° split point that eliminates walking and reduces thrust pressure. The bit is ground from solid with h8 tolerance for precise hole diameters.

What stands out

• TiN coating increases surface hardness and reduces friction for longer life and faster drilling.
• 135° split point provides self-centering and prevents wandering on contact.
• Ground from solid HSS with h8 tolerance ensures consistent diameter and roundness.
• Suitable for a wide range of materials including steel, cast iron, non-ferrous metals, plastics, and wood.
• Standard jobber length (DIN 338) fits most drill chucks and applications.

Technical details

• Drill bit type: Twist drill bit
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Diameter: 12.9 mm
• Standard: DIN 338
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point
• Overall length: 151 mm
• Flute length: 101 mm
• Flute type: Right-hand spiral
• Manufacturing process: Ground from solid
• Tolerance: h8
• Colour: Gold
• Recommended materials: Steel, cast iron, non-ferrous metals, plastics, wood
• Application: General purpose drilling
• Compatibility: Corded drills, cordless drills, drill presses

Our verdict

A professional-grade twist drill bit that delivers accurate holes and long service life thanks to its TiN coating and precision grinding. Ideal for workshops and demanding drilling tasks.