RUKO SPB-DIN338-9.2mm-HSSCo kierreporanterä | 9,2 mm HSS-Co 5 % koboltti DIN 338

This RUKO twist drill bit stands out with its 5% cobalt-alloyed high-speed steel, delivering superior heat resistance and wear protection compared to standard HSS bits. The split point geometry allows precise spot drilling without center punching, while the 135° point angle reduces walking on hard steels.

Highlights

• HSS-Co 5% cobalt steel for high toughness and hot hardness
• DIN 338 short series with cylindrical shank, fully ground
• Split point (DIN 1412 C) for accurate starting and reduced thrust
• 135° point angle optimized for tough materials up to 1100 N/mm²
• Bright finish for excellent chip flow

In daily use

Ideal for drilling alloyed and unalloyed steels, stainless steel, cast iron, and non-ferrous metals. The 9.2 mm diameter and 87 mm flute length suit general workshop tasks where precision and durability matter. Use with cutting oil for best results in stainless steel.

Full specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 9.2 mm
• Total length: 125 mm
• Flute length: 87 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point (DIN 1412 C)
• Surface finish: Bright
• Tolerance: h8
• Cutting direction: Right-hand
• Max tensile strength: 1100 N/mm²

Final note

RUKO precision grinding ensures consistent hole quality and long tool life, making this bit a reliable choice for demanding metalworking applications.