Description
Product Overview
The SHARS M3 M12 7 piece counterbore set is engineered for precision machining of metric solid cap screws ranging from M3 to M12. Crafted from high‑speed steel (HSS), each cutter features three flutes that promote efficient chip evacuation and reduce heat buildup during operation. The set includes seven individual tools, each calibrated to deliver consistent depth and diameter tolerances, ensuring a clean, smooth counterbore that meets demanding engineering specifications. With a compact 8 x 6 x 5 inch package and a total weight of three pounds, the set balances portability with robust construction, making it suitable for both bench‑top and CNC applications. Detailed specifications such as the model number 404‑9275, material composition, and flute count are clearly marked on each tool, allowing technicians to quickly identify the appropriate cutter for a given job. This product’s design reflects SHARS Tool’s commitment to durability, accuracy, and user‑friendly ergonomics, providing a reliable solution for high‑volume production environments and specialized repair tasks alike.
![[Product front view showing all components]](https://www.oalvora.store/wp-content/uploads/2026/08/833aa041699245288ade92c1268b9b20.jpg)
Usage
Designed for a wide range of industrial and scientific settings, this counterbore set excels in applications such as aerospace component assembly, automotive manufacturing, electronics enclosure fabrication, and maintenance of heavy‑duty machinery. The three‑flute geometry enables rapid material removal while maintaining tight dimensional control, making it ideal for CNC milling centers, manual drill presses, and multi‑spindle machining stations. Users can employ the set for creating precise counterbore holes in hardened steel, stainless steel, and alloyed materials, ensuring proper seating of cap screws and fasteners. The set’s versatility also supports custom tooling configurations, allowing engineers to adapt the cutters for specialized fixtures or prototype development. Whether you are a seasoned CNC programmer, a maintenance technician, or a production line supervisor, the SHARS counterbore set delivers consistent results, reducing setup time and minimizing tool wear across diverse operational scenarios.
Why Choose Us
Choosing the SHARS M3 M12 counterbore set means investing in a product backed by decades of tooling expertise and rigorous quality control processes. Each cutter undergoes heat treatment and precision grinding to achieve a hardened surface that resists wear and maintains cutting edge integrity even after extended use. SHARS provides a comprehensive warranty and responsive customer support, ensuring that any concerns are addressed promptly and professionally. The set’s design incorporates ergonomic handles and balanced weight distribution, reducing operator fatigue during prolonged machining sessions. Additionally, the inclusion of seven distinct sizes eliminates the need for multiple purchases, delivering cost‑effective value for organizations seeking to streamline their tooling inventory. With a proven track record reflected in its ranking as #26 in the Counterbores category on major e‑commerce platforms, this product demonstrates both market acceptance and reliability. By selecting SHARS, you benefit from a trusted brand that prioritizes performance, durability, and after‑sales service, giving you confidence in every machining operation.
Key Features
- Three‑flute HSS cutters provide fast chip evacuation and reduced heat for longer tool life.
- Seven-piece set covers M3 to M12 sizes, eliminating the need for multiple purchases.
- Precision‑ground geometry ensures accurate depth and diameter for clean counterbore finishes.
- Ergonomic design reduces operator fatigue and improves handling in both manual and CNC setups.
- Comes with dedicated SHARS customer support and warranty for peace of mind.
FAQ
What material is the counterbore set made from?
The set is constructed from high‑speed steel (HSS), a material known for its hardness, heat resistance, and ability to maintain a sharp cutting edge even under demanding machining conditions.
Can these cutters be used on a CNC machine?
Yes, the three‑flute design is optimized for both manual drill presses and CNC milling centers. The cutters can be mounted in standard tool holders, allowing seamless integration into automated machining workflows.
How do I select the correct cutter for a specific screw size?
Each cutter in the set is labeled with its intended screw size range (M3‑M12). Refer to the product markings or the included size chart to match the cutter to the cap screw you are working with, ensuring proper fit and finish.
What warranty does SHARS offer for this product?
SHARS provides a limited warranty that covers manufacturing defects and premature wear under normal use. Customers can contact SHARS technical support for assistance, replacement parts, or troubleshooting guidance.
Is the set suitable for hardened steel applications?
While the HSS material offers excellent performance on many alloys, for extremely hardened steel you may consider using carbide‑coated variants. However, for most industrial and scientific applications, the SHARS HSS set delivers reliable results.







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