R8 Precision Round Spring Collet 5/16 Inch Mill Chuck Holder With M12 Thread For Taper Spindle CNC Mill Machine 65Mn Steel Beefy 0.013mm Precision Non Collapse Design For Milling Machines 1 Piece

Precise Round Collet with M12 Thread for CNC Milling 1pc
✔️ 0.013mm precision; 65Mn steel; non-collapse; 5/16 in clamp; M12

This precision round collet is designed to hold tool shanks securely in CNC milling spindles with standard R8 tapers and M12 threads. It’s built for tough milling work where repeatable accuracy and fast tool changes matter.

✅ Material: 65Mn alloy steel, hardened to HRC55.
✅ Hardened and ground for tight tolerances.
✅ Clamping range: 5/16 inch inner diameter (7.94 mm); M12 tail thread.
✅ Application: Fits R8 spindle taper; supports quick tooling changes.

💡 What is a collet used for in milling machines? Collets provide secure grip and precise alignment for tool shanks, making tool changes quick and repeatable. - They minimize runout and improve milling accuracy - They connect to the spindle using a standard thread or taper - They support fast changing between different tools