RUKO STB-HSS-TiN Stubby Twist Drill Bit 5/16 inch TiN Coated

The RUKO STB-HSS-TiN-Ø5/16-1-Zoll is a stubby twist drill bit engineered for precision drilling in tight spaces where standard jobber-length bits cannot fit. Its short overall length of 1 inch provides exceptional rigidity, reducing deflection and improving hole accuracy. The titanium nitride (TiN) coating gives the bit a hard, gold-coloured surface that increases wear resistance and extends tool life when drilling steel, stainless steel, cast iron, and non-ferrous metals.

Highlights

• Stubby length for maximum stability and reduced breakage
• TiN coating for high wear resistance and heat resistance
• 135° split point for self-centring and reduced thrust
• Precision ground from high-speed steel (HSS)

In daily use

This drill bit is ideal for maintenance, repair, and production work where access is limited. The split point eliminates the need for centre punching and prevents walking on the workpiece. The TiN coating reduces friction, allowing faster drilling speeds and cleaner holes. Use with a suitable drill chuck or collet; the straight shank fits standard keyed or keyless chucks.

Full specifications

• Material: High-Speed Steel (HSS)
• Coating: Titanium Nitride (TiN)
• Drill bit type: Stubby twist drill bit
• Cutting diameter: 5/16 inch (7.94 mm)
• Overall length: 1 inch (25.4 mm)
• Shank type: Straight round shank
• Shank diameter: 5/16 inch (7.94 mm)
• Point angle: 135° split point
• Flute type: Spiral flute
• Cutting direction: Right-hand cut
• Number of flutes: 2
• Coolant through: No

Final note

RUKO's stubby TiN drill bit combines compact size with advanced coating technology for reliable performance in demanding applications.