RUKO SPB-DIN338-HSS-TiN-Ø8,2mm špirálový vrták

Precision drilling in tough materials demands a bit that stays sharp and centered. The RUKO SPB-DIN338-HSS-TiN Ø8.2mm twist drill bit is built for exactly that—a ground-from-solid HSS body with a gold titanium nitride coating that reduces friction and heat, so you get clean, accurate holes in steel, cast iron, non-ferrous metals, plastics, and wood.

Who is it for

This bit suits machinists, metalworkers, and serious DIYers who need reliable general-purpose drilling. If you regularly work with alloyed or unalloyed steel and want a bit that lasts longer than uncoated HSS, this TiN-coated option is a practical upgrade.

Main features

• DIN 338 standard: short series twist drill with right-hand cutting and 118° point angle
• HSS (high-speed steel) ground from solid for strength and concentricity
• TiN (titanium nitride) coating: gold color, ~2300 HV hardness, heat resistant up to 600°C
• Cylindrical shank, 8.2 mm diameter, h8 tolerance for secure chucking
• Total length 117 mm, flute length 75 mm

Specifications

• Drill bit type: twist drill bit
• Standard: DIN 338
• Material: HSS (high-speed steel)
• Coating: TiN (titanium nitride)
• Diameter: 8.2 mm
• Shank type: cylindrical
• Shank diameter: 8.2 mm
• Total length: 117 mm
• Working length (flute length): 75 mm
• Point angle: 118°
• Tolerance: h8
• Cutting direction: right-hand cutting
• Manufacturing process: ground from solid
• Colour: gold (TiN coated)
• Suitable materials: alloyed and unalloyed steel, cast iron, non-ferrous metals, plastics, wood
• Application: general purpose drilling
• Coating hardness (approx.): 2300 HV
• Coating heat resistance (max.): 600°C
• Core thickness: normal
• Flute type: normal

Tips

Use a center punch to mark the hole position and reduce walking. Apply cutting fluid when drilling steel to extend bit life. For best results, use a drill press or a stable hand drill at the correct speed for the material.