Dolfamex drill bit DIN 335-C 90° x 15 mm, carbide-tipped straight shank

Dolfamex DIN 335-C drill bit with a 90° point angle and 15 mm diameter is engineered for general metalworking and accurate centering operations. The drill meets DIN 335-C geometry for consistent chip evacuation and stable drilling behavior. A carbide tip increases wear resistance and extends cutting life when working with a range of metallic materials. The straight shank design enables secure mounting in standard chucks of hand drills and drill presses, offering compatibility with common workshop equipment.

Advantages

The carbide-tipped cutting edge provides enhanced hardness at the point, improving penetration and prolonging service life under regular use. DIN 335-C geometry ensures efficient chip removal and reduced walking when beginning a hole, delivering accurate starts and repeatable hole position. The straight shank allows use in chucks without special adapters and simplifies tool changes. The combination of robust tip material and standardized geometry balances performance and reliability for routine metal drilling tasks.

Suitable for

• General metal drilling in mild steel, stainless steel, and non-ferrous metals (within recommended material limits for carbide tips)
• Centred holes where a 90° point angle improves positioning and reduces walking
• Use in hand drills and drill presses requiring a straight shank tool
• Workshop and maintenance tasks needing a durable, wear-resistant drill

Key specifications

• Diameter: 15 mm
• Point angle: 90° (DIN 335-C geometry)
• Tip material: carbide-tipped
• Shank type: straight shank for standard chucks
• Intended application: metalworking and general drilling

How to use

Select an appropriate cutting speed and feed rate for the material being drilled and ensure the drill is securely clamped in the chuck. Use cutting fluid when drilling metals to reduce heat and extend the life of the carbide tip. Start drilling at low speed to establish the hole and then increase speed within recommended ranges for the workpiece material. Apply steady, even pressure and withdraw periodically to clear chips for deeper holes.

Usage recommendations

For best results, use suitable coolant or cutting oil, avoid excessive feed that can chip the carbide tip, and resharpen or replace the bit when wear degrades hole accuracy. Confirm compatibility with specific alloys before use and follow safety practices including eye protection and secure workpiece clamping.