RUKO SPB-DIN1897-12.5mm HSS-G Short Spiral Drill Bit, 12.5 mm

Drilling precise holes in tough materials like steel and cast iron requires a drill bit that stays sharp and centered. The RUKO SPB-DIN1897-12.5mm is a short spiral drill bit made from high-speed steel (HSS-G), ground from solid for durability. Its split point design reduces walking and improves accuracy, making it a reliable choice for general-purpose drilling in metal, plastic, and wood.

Who is it for

This drill bit suits machinists, metalworkers, and serious DIYers who need a robust, precise tool for hand drills, pillar drills, or automatic machines. It's ideal for creating clean 12.5 mm holes in alloyed and unalloyed steel, cast iron, sintered metal, non-ferrous metals, plastics, and wood.

Main features

• High-speed steel (HSS-G) construction, ground from solid for long life
• Split point (cross-ground) tip for accurate starting without a center punch
• Bright finish, uncoated, for clean cutting and easy resharpening
• Right-hand cutting direction with cylindrical shank for secure chuck grip
• Complies with DIN 1897 short series for use in confined spaces

Specifications

• Drill bit type: Spiral drill bit (short series)
• Standard: DIN 1897
• Material: High-speed steel (HSS-G)
• Diameter: 12.5 mm
• Total length: 94 mm
• Working length: 56 mm
• Shank type: Cylindrical
• Shank diameter: 12.5 mm
• Point angle: 118°
• Point grind: Split point (cross-ground)
• Surface finish: Bright (ground)
• Coating: Uncoated
• Direction of cut: Right-hand cutting
• Tolerance: h8

Tips

Use cutting fluid when drilling steel to extend bit life and improve finish. For best results, start at a lower speed and increase as needed. The split point reduces the need for center punching, but a pilot hole can help in very hard materials.