Step drill c.k tools T3011 HSS 6–32 mm, length 91 mm, 3-flats shank

c.k tools T3011 is a high-speed steel (HSS) step drill designed to create and enlarge round holes from 6 mm up to 32 mm in thin materials and sheet metal. With a total length of 91 mm and a 3-flats shank, the bit fits securely in chucks and quick-change holders. The stepped geometry consolidates multiple diameters in a single tool, reducing tool changes and improving workflow for repetitive hole-making tasks.

Advantages

The HSS construction offers durability and heat resistance suitable for cutting into coated and uncoated sheet metals. The stepped profile provides precise, concentric hole sizes with reduced burr formation compared to single-diameter bits. The 3-flats shank improves grip and prevents slippage during drilling, enabling consistent torque transfer. A single bit covers a wide diameter range, lowering the need to change tools and saving setup time.

Suitable for

Key specifications

How to use

Secure the step drill in an appropriate chuck or holder using the 3-flats shank to prevent slipping. Mark the center of the intended hole and start drilling at low to moderate speed with light feed pressure to establish the pilot steps. Increase speed moderately as the hole enlarges while maintaining steady pressure; use cutting lubricant when working with thicker or coated metals to reduce heat and extend tool life. Withdraw the bit periodically to clear chips and inspect the hole diameter until the desired step is reached.

Recommendations

Use appropriate personal protective equipment, clamp workpieces firmly, and select drill speeds and lubrication compatible with the sheet metal type. For optimal performance and longer life, avoid excessive axial force and clear chips frequently. When precise edge finish is required, deburr the hole after drilling.