Broca helicoidal HSS-R laminada a quente RUKO SPB-DIN338 16,5 mm

Drilling precise 16.5 mm holes in tough metals demands a bit that stays sharp and centered. The RUKO SPB-DIN338 twist drill bit is roll-forged from HSS-R high-speed steel, giving it the strength and heat resistance to power through alloyed and unalloyed steel, cast iron, non-ferrous metals, and hard plastics without wandering.

Who is it for

Professional metalworkers, maintenance technicians, and serious DIYers who need a dependable general-purpose drill bit for corded drills, cordless drills, or drill presses.

Main features

• Roll-forged HSS-R construction for high toughness and durability
• DIN 338 standard dimensions: 178 mm total length, 120 mm working length
• 118° point angle for accurate starting and reduced walking
• Black oxide surface finish improves chip flow and resists corrosion
• Cylindrical shank with h8 tolerance for secure chuck grip
• Withstands temperatures up to approximately 400°C

Specifications

• Material: HSS-R (High-Speed Steel, Roll-Forged)
• Standard: DIN 338
• Drill Bit Diameter: 16.5 mm
• Total Length (L1): 178 mm
• Working Length (L2): 120 mm
• Shank Type: Cylindrical
• Point Angle: 118°
• Surface Finish: Black Oxide
• Manufacturing Process: Roll-Forged
• Cutting Direction: Right-hand cut
• Tolerance: h8
• Application: General purpose drilling
• Recommended Materials: Alloyed and unalloyed steel, grey cast iron, malleable cast iron, non-ferrous metals, hard plastics, wood
• Tool Compatibility: Corded drills, cordless drills, drill presses
• Heat Resistance: Up to approx. 400°C
• Chip Removal: Good
• Packaging Quantity: 1 piece
• Series/Type: HSS-R

Tips

Use a center punch to mark the hole location before drilling to prevent the bit from wandering. Apply cutting fluid when drilling steel to extend bit life and improve finish. Reduce speed and increase feed pressure for harder materials.