RUKO SPB-DIN338-7.3mm-HSSCo Twist Drill Bit

Professional machinists and metalworkers rely on the RUKO SPB-DIN338-7.3mm-HSSCo twist drill bit for precise holes in tough materials. Its cobalt-alloyed high-speed steel construction withstands high temperatures, making it a dependable choice for stainless steel and cast iron.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (cobalt-alloyed high-speed steel)
• Diameter: 7.3 mm
• Shank type: Cylindrical (straight shank)
• Point angle: 135°
• Point grind: Split point
• Surface finish: Bright
• Manufacturing process: Fully ground
• Overall length: 109 mm
• Working length (flute length): 69 mm
• Cutting direction: Right-hand cut
• Tolerance: h8
• Recommended application materials: Steel, stainless steel, cast iron, non-ferrous metals
• Heat resistance: High
• Packaging quantity: 1 piece
• Flute type: Standard spiral flute
• Core thickness: Increased

Why choose it

The split point design allows self-centering and reduces walking, while the 135° point angle and increased core thickness provide stability and efficient chip evacuation. The cobalt alloy extends tool life in demanding applications.

Ideal use cases

• Drilling stainless steel components in fabrication shops
• Creating precise holes in cast iron machine parts
• General metalworking tasks requiring high heat resistance

Good to know

Manufactured to DIN 338 standards, this drill bit offers consistent quality and performance. The bright finish reduces friction and improves chip flow.