Step drill bit Cimco 201275

The Cimco 201275 step drill bit is a single-piece stepped drill designed to create a range of hole diameters in sheet materials and thin-walled workpieces. With a right-hand rotation and progressive steps on the flute, it enables drilling multiple hole sizes without changing tools. The tool is suitable for use in handheld drills and drill presses where accurate, repeatable stepped holes are required.

Advantages

This step drill bit delivers efficient material removal across multiple diameters in one operation, reducing tool changes and setup time. Its single-piece construction increases durability and stability during drilling, while the stepped geometry helps produce cleaner hole edges and consistent diameters. Designed for right-hand rotation, it works with standard drilling equipment and provides reliable performance for repetitive tasks.

Suitable for

• Drilling progressively sized holes in thin metal sheets
• Enlarging or deburring existing holes
• Creating access holes for cables or fasteners in panels
• Workshop and on-site repair tasks requiring multiple hole sizes

Key specifications

• Tool type: single-piece step drill bit with multiple stepped diameters
• Rotation direction: right-hand
• Suitable materials: sheet metal, thin-walled alloys, plastics, and similar thin materials
• Mounting: standard drill chuck compatibility for handheld drills and drill presses
• Finish and heat treatment: designed for durability under typical drilling conditions

How to use

Select an appropriate speed and feed for the material being drilled, secure the workpiece to prevent movement, and clamp the step drill in a standard drill chuck. Align the pilot or initial step with the marked center of the hole and apply steady, even pressure while drilling with right-hand rotation. If the bit overheats or produces excessive burrs, reduce speed, use cutting fluid where suitable, and clear chips frequently. For multiple hole sizes, drill progressively through the steps until the desired diameter is reached.

Usage recommendations

Use appropriate personal protective equipment, secure thin workpieces to avoid vibration, and consider a lubricant or coolant when drilling harder metals. Inspect the bit for wear before use and replace it when steps become dull to maintain hole quality and reduce the risk of workpiece damage.