90° 3-Flute Countersink Drill Bit: Efficient and Stable Edge Machining Solution
In metalworking and mechanical manufacturing, a countersink drill bit is an essential auxiliary cutting tool. It is mainly used for edge chamfering and deburring after drilling, helping to improve assembly precision and surface finish. Among various designs, the 90° 3-Flute Countersink Drill Bit stands out for its balanced geometry, stable cutting performance, and wide range of industrial applications.
The three-flute design ensures smooth and stable cutting, effectively reducing vibration and tool marks while producing a cleaner chamfered surface. Compared with single-flute bits, it offers a good balance between cutting speed, surface quality, and tool life, making it ideal for batch production and various metal materials.
The available size range covers 6.3mm to 50mm, meeting the needs of different hole diameters and edge processing tasks. Depending on specific machining requirements, the bit is available in multiple high-speed steel (HSS) grades, including HSS4241, HSS4341, HSS6542, and HSS M35, providing a balance of durability and cost efficiency. Additionally, several surface coating options—such as Bright (uncoated), TiN (Titanium Nitride), and Cobalt coating—further enhance wear resistance and cutting stability under various working conditions.
The 90° 3-Flute Countersink Drill Bit is widely used for deburring, countersinking, and edge finishing after drilling operations. It is suitable for a wide range of materials, including carbon steel, stainless steel, cast iron, aluminum alloy, and copper. With its efficient and consistent cutting performance, it ensures clean, uniform chamfered edges, making it a reliable choice for both precision machining and mass production.
In summary, the 90° 3-Flute Countersink Drill Bit combines robust structural design, premium HSS materials, and versatile coating options, delivering excellent sharpness, durability, and machining stability. It provides an efficient and accurate edge-finishing solution for a wide variety of metalworking applications.
Post time: Oct-24-2025
