RUKO DOB-HSS-5.5mm-blank Twist Drill Bit, 5.5 mm, HSS, DIN 338, Bright Finish

The RUKO DOB-HSS-5.5mm-blank is a precision twist drill bit engineered for reliable performance in general-purpose drilling tasks. Its 5.5 mm diameter and DIN 338 standard make it a dependable choice for workshops and professional applications where consistent hole quality is required.

Highlights

• High-speed steel (HSS) construction for durability and heat resistance
• Bright, uncoated finish reduces friction and improves chip evacuation
• 118° point angle for efficient centering and reduced walking
• Straight shank with h8 tolerance for secure chuck grip
• Roll forged for enhanced strength and longer tool life

In daily use

This drill bit excels in steel, cast iron, non-ferrous metals, and plastics, with a recommended material hardness up to 900 N/mm². Its jobber length provides a good balance between reach and rigidity, making it suitable for both hand-held and stationary drilling machines. The right-hand cutting direction ensures smooth, controlled drilling in standard rotation.

Full specifications

• Material: High-Speed Steel (HSS)
• Drill Bit Diameter: 5.5 mm
• Overall Length: 93 mm
• Flute Length: 57 mm
• Shank Type: Cylindrical / Straight Shank
• Shank Diameter: 5.5 mm
• Point Angle: 118°
• Drill Type: Jobber Drill
• Standard: DIN 338
• Finish / Coating: Bright / Uncoated
• Cutting Direction: Right Hand Cut
• Tolerance: h8
• Series: Dormer A100
• Application: General purpose drilling in steel, cast iron, non-ferrous metals, plastics
• Recommended Material Hardness: Up to 900 N/mm²
• Manufacturing Process: Roll Forged
• Packaging Quantity: 1

Final note

Backed by RUKO's reputation for quality cutting tools, this drill bit delivers dependable performance for everyday drilling needs.