KWB 258040 HSS-G Twist Drill Bit 4 mm DIN 338, Working Length 43 mm, Total Length 75 mm, Bright Finish, for Metal, Wood, Plastic

Twist drill bit made of HSS-G high-speed steel, precision ground to DIN 338 with a 4.0 mm diameter. The 118° tip angle and bright finish deliver clean, accurate holes in metal, wood, and plastic using cordless drills, electric drills, or drill presses with keyless or geared chucks.

Advantages

Precision-ground flutes and a standard point geometry ensure fast chip removal and reduced cutting resistance. The cylindrical shank fits all common drill chucks and prevents slippage during drilling. HSS-G steel offers a balanced combination of hardness and toughness for reliable performance in everyday workshop tasks.

Suitable for

• Drilling steel, non-ferrous metals, and cast iron
• Wood and wood-based materials
• Plastics and acrylic sheets
• Cordless drills, electric drills, and drill presses

Key specifications

• Material: HSS-G (High-Speed Steel Ground)
• Drill bit type: Twist drill bit
• Standard: DIN 338
• Diameter: 4.0 mm
• Total length: 75 mm
• Working length (spiral length): 43 mm
• Shank type: Cylindrical
• Shank diameter: 4.0 mm
• Tip angle: 118°
• Grinding: Precision ground
• Surface finish: Bright (uncoated)
• Direction of cut: Right-hand cutting
• Packaging quantity: 1 piece

Recommendations

Use a suitable cutting fluid when drilling steel to extend tool life and improve hole quality. For best results in metal, pre-punch or centre-punch the hole position to prevent the drill from wandering.