Description
Product Overview
The Accusize Threading Inserts set delivers a premium combination of CVD (Chemical Vapor Deposition) and tin coating technologies, engineered to maximize durability and cutting efficiency. Each insert is fabricated from high‑grade carbide, providing exceptional hardness while maintaining a fine edge geometry that resists wear during high‑speed metal turning. The set includes two pieces of each insert type, covering a comprehensive range of external thread profiles such as 11ER, MGMN200, WCMT2.52, CCMT21.51, and DCMT21.51. With dimensions of 3.94 x 1.57 x 0.24 inches and a lightweight design of 0.81 ounces per insert, the components are easy to handle and store. The CVD coating adds a hard, wear‑resistant surface, while the tin layer reduces friction and improves chip flow, extending tool life and reducing the need for frequent replacements. This product is manufactured by Accusize Co., Ltd., a reputable supplier known for precision cutting tools, and it meets the rigorous standards required for industrial machining environments.
![[Product front view showing all components]](https://www.ourspots.store/wp-content/uploads/2026/07/c885a4436c3144d8b50f7714ab02ea0b.jpg)
Usage
These inserts are intended for use in turning operations that require external threading on steel and other ferrous alloys. They excel in applications where consistent thread geometry and surface finish are critical, such as aerospace component manufacturing, automotive part production, and high‑precision gear fabrication. The inserts are compatible with standard turning tool holders and can be quickly swapped in CNC machines to minimize downtime. Users should select the appropriate insert geometry based on the thread pitch and diameter required for the job, ensuring optimal chip evacuation and reduced cutting forces. While the coating provides excellent performance on most steels, the inserts are not recommended for machining aluminum or stainless steel, as the coating may not withstand the specific chemical interactions of those materials. Proper coolant application further enhances performance, helping to dissipate heat and maintain dimensional stability throughout the machining cycle.
Why Choose Us
Choosing Accusize means selecting a partner committed to quality, reliability, and continuous innovation. Our inserts undergo strict quality control processes, including dimensional inspection and coating thickness verification, to guarantee that each piece meets exacting specifications. The dual‑coating system—CVD for hardness and tin for lubricity—offers a unique advantage that few competitors provide, translating into longer tool life and lower total cost of ownership for your shop. Additionally, Accusize provides responsive technical support, offering guidance on insert selection, machining parameters, and troubleshooting. Our reputation is reflected in a 4.7‑star rating from over twenty verified customers, highlighting satisfaction with performance, durability, and after‑sales service. By integrating these inserts into your production line, you benefit from reduced tool changes, improved surface finish, and consistent thread quality, all of which contribute to higher throughput and profitability.
Key Features
- Dual CVD and tin coating extends insert lifespan, reducing replacement frequency and cutting costs.
- High‑grade carbide construction ensures rigidity and resistance to deformation under heavy cutting loads.
- Comprehensive thread profile coverage eliminates the need to stock multiple insert types.
- Optimized geometry provides smooth chip evacuation, minimizing surface defects and improving finish.
- Dedicated technical support and after‑sales service guarantee assistance throughout the product lifecycle.
Technical Specifications
Product Dimensions: 3.94 x 1.57 x 0.24 inches; Weight: 0.81 ounces per insert. Item Model Number: 2387-2004INSERTS. Coating Types: CVD (hardness) and Tin (lubricity). Compatibility: External threading applications including 11ER, MGMN200, WCMT2.52, CCMT21.51, DCMT21.51. Material: Tungsten carbide substrate with precision‑ground cutting edges. Recommended Cutting Speed: Up to 250 m/min depending on workpiece material. Coolant: Use water‑based or oil‑based coolant to enhance performance and prolong tool life.
Installation Instructions
Begin by selecting the appropriate insert geometry for the desired thread size. Clean the tool holder and insert seat to remove any debris or residual coolant. Place the insert into the holder, ensuring the cutting edge aligns with the machining direction indicated on the insert label. Apply a light torque using a calibrated wrench—typically 0.5 to 1.0 Nm—to secure the insert without over‑tightening, which could cause chipping. Verify the insert orientation by checking the reference markings against the CNC program. Once installed, perform a short test cut on a sacrificial piece of material to confirm correct positioning and to fine‑tune feed rates and spindle speeds. Adjust parameters as needed based on chip formation and surface finish observations.
Maintenance Tips
Regularly inspect inserts for signs of wear, such as rounding of the cutting edge or coating delamination. Replace any insert that shows excessive wear to maintain thread accuracy. Keep the tool holder and surrounding machine components clean to prevent abrasive particles from damaging the coating. Use appropriate coolant flow rates to avoid overheating, which can degrade the CVD layer. Store unused inserts in a dry, dust‑free environment, preferably in their original packaging, to protect the coating from corrosion. Periodically recalibrate machine settings to account for any tool wear and to ensure consistent thread dimensions across production runs.
FAQ
What materials are these inserts best suited for?
The Accusize inserts excel on carbon steel and alloy steel workpieces where the CVD and tin coatings provide superior wear resistance and reduced friction. They are not recommended for aluminum or stainless steel due to potential coating incompatibility.
Can I use these inserts for internal threading?
These inserts are specifically designed for external threading applications. For internal threads, Accusize offers a separate line of inserts optimized for that purpose.
How do I know which insert geometry to select?
Refer to the thread specifications of your part—such as pitch, diameter, and thread form. The product listing includes a compatibility chart that matches each insert geometry to common thread standards like 11ER and MGMN200.
What is the warranty coverage for these inserts?
Accusize provides a limited one‑year warranty covering manufacturing defects and coating failures under normal operating conditions. Contact our support team with the purchase details for warranty claims.
Do the inserts require special coolant?
Standard water‑based or oil‑based coolants are suitable. The key is to maintain adequate flow to keep the cutting zone cool and to help flush chips away, which preserves the coating integrity and prolongs tool life.




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