4pcs ER11-A(M14) Type Collet Clamping Nut with Dynamic Balancing Holes, 40Cr Alloy Steel for CNC Machine Chuck Turning Tools Tool Holder, Black & Glossy Silver

Size - ER11-A(M14); Thread Diameter: 14 mm / 0.55"; Thread Pitch: 0.75 mm / 0.03"; Nut Outer Diameter: 19 mm / 0.75"; Thickness: 14 mm / 0.55"; Hexagonal Width: 17mm / 0.67".
Material - Made of 40Cr alloy steel with a hardness of HRC48-50, offering high strength and toughness. After heat forming, it ensures durability and reliability under demanding conditions.
Feature - Serving as a quality replacement part, this collet nut offers superior performance and good compatibility. Suitable for most tool holders, the hex nuts can be used with ER-type tool holders, extension bars holding drill bits, tool holders, boring tools, and other tools.
Application - Suitable for collets in CNC lathes, milling machines, and other machine tools, it firmly holds cutting tools, ensuring accuracy and stability during machining. Widely used in mechanical shaping, metalworking, automotive manufacturing, and other industries. industries.
Note - Do not overtighten the nut, as this will damage the clamp; Regularly check the clamping nut for wear and looseness, and replace damaged parts in a timely manner to ensure safe performance.