Fischer 504257 SDS Max Spiral Cutting Drill Bit 35 mm

The Fischer 504257 SDS Max spiral cutting drill bit is a high-performance tool engineered for demanding drilling tasks in hard materials. With a diameter of 35 mm and a robust SDS Max shank, this drill bit is designed to deliver consistent results when used with compatible rotary hammers. It features a specialized head geometry that ensures stability and precision, making it an essential component for professional construction and renovation projects requiring reliable hole formation in concrete and masonry.

Advantages

The drill bit utilizes a quadruple-edged head design that effectively prevents jamming when encountering steel reinforcement within concrete. Its solid carbide cutting element is PGM-compliant, ensuring that every hole drilled meets strict safety and dimensional standards for secure anchor installation. The core-reinforced flute design maximizes energy transfer from the rotary hammer to the tip, which significantly reduces vibration during operation and enhances overall drilling speed. Furthermore, the wear-resistant quadruple spiral geometry facilitates efficient dust removal, which extends the service life of the tool and maintains consistent performance even during prolonged use.

Suitable for

• Drilling into reinforced concrete
• Masonry and brickwork applications
• Natural stone drilling
• Professional construction and renovation projects

When it may not be suitable

This drill bit is specifically designed for use with SDS Max rotary hammers and is not compatible with standard drill chucks or smaller hammer drills. It is not intended for use on wood, metal, or soft materials where a specialized drill bit geometry would be required to prevent damage to the workpiece.

Key specifications

• Diameter: 35 mm
• Overall length: 670 mm
• Flute length: 550 mm
• Shank type: SDS Max
• Head design: Quadruple-edged with centring tip
• Material compatibility: Concrete, masonry, brick, natural stone

How to use

Ensure the drill bit is securely inserted into the SDS Max chuck of your rotary hammer until it clicks into place. Before starting, mark the exact location for the hole to ensure accuracy. Position the centring tip on the marked spot and begin drilling at a moderate speed, applying steady pressure. Allow the drill bit to perform the work, and periodically retract the bit from the hole to clear out accumulated dust, especially when drilling deep holes. Always wear appropriate personal protective equipment, including eye and ear protection, during operation.

What to consider before purchase

• Verify that your power tool is equipped with an SDS Max chuck system.
• Ensure the 35 mm diameter meets the specific requirements of your anchors or fasteners.
• Check the total length of 670 mm to ensure it is sufficient for the thickness of the material you intend to drill.

Usage recommendations: To maintain the longevity of the drill bit, avoid excessive lateral pressure during drilling and allow the tool to cool down if it becomes overheated during intensive, continuous use.