RUKO LOS-HSS-G 27.0mm Ground Twist Drill Bit, HSS, DIN 338, 118° Point, Straight Shank

Drilling large-diameter holes in tough materials demands a bit that stays sharp and centered. The RUKO LOS-HSS-G 27.0 mm twist drill bit is ground from high-speed steel to deliver 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 a reliable 27 mm drill for general-purpose work. It fits standard drill chucks with its straight cylindrical shank.

Main features

• Ground HSS (HSS-G) construction for sharpness and durability
• 27.0 mm diameter with DIN 338 geometry
• 118° conical point for accurate starting and reduced wandering
• Right-hand spiral flute for efficient chip evacuation
• Bright uncoated finish

Specifications

• Drill bit type: Twist drill bit
• Material: High-speed steel (HSS)
• Manufacturing process: Ground (HSS-G)
• Diameter: 27.0 mm
• Shank type: Cylindrical (straight shank)
• Shank diameter: 27.0 mm
• Standard: DIN 338
• Point angle: 118°
• Point grind: Conical
• Flute type: Right-hand spiral
• Cutting direction: Right-hand
• Overall length: 267 mm
• Working length (flute length): 165 mm
• Tolerance: h8
• Surface finish: Bright (uncoated)
• Recommended material hardness: Up to 900 N/mm² (approx. 28 HRC)
• Cooling: Suitable for dry or wet drilling
• Packaging: Individual unit

Tips

Use a pilot hole for diameters above 10 mm to reduce thrust and improve accuracy. Apply cutting fluid when drilling steel to extend tool life.