RUKO SPB-DIN338 12.6 mm Roll-Forged HSS Twist Drill Bit

Drilling precise 12.6 mm holes in tough materials demands a bit that stays sharp and cuts cleanly. The RUKO SPB-DIN338 twist drill bit answers that need with a roll-forged high-speed steel body that resists heat and wear, making it a dependable choice for workshop and industrial use.

Who is it for

This drill bit suits metalworkers, maintenance technicians, and serious DIYers who regularly drill steel, cast iron, non-ferrous metals, plastics, and wood. Its DIN 338 geometry and h8 tolerance make it appropriate for both hand drills and stationary machines.

Main features

• Roll-forged HSS construction for durability and heat resistance up to 400°C
• DIN 338 standard with 118° point angle for general-purpose drilling
• Cylindrical shank fits standard drill chucks
• Bright finish reduces friction and improves chip flow
• Right-hand cutting direction for conventional drilling

Specifications

• Diameter: 12.6 mm
• Overall length: 151 mm
• Flute length: 101 mm
• Shank diameter: 12.6 mm
• Point angle: 118°
• Material: High-speed steel (HSS)
• Manufacturing process: Roll-forged (HSS-R)
• Standard: DIN 338
• Cutting direction: Right-hand
• Surface finish: Bright
• Tolerance: h8
• Core hardness: 62-64 HRC

Tips

For precise hole placement, use a centre punch or pilot drill before starting. Apply cutting fluid when drilling steel to extend bit life. Reduce speed when drilling larger diameters or harder materials.