ER20A (M25) Collet Nut – Precision, Strength, and Reliability for Demanding Machining Applications Key Specifications: Thread Diameter: 25 mm / 0.98 in Thread Pitch: 1.5 mm / 0.06 in Nut Outer Diameter: 34 mm / 1.34 in Thickness: 20 mm / 0.79 in Hex Width: 30 mm / 1.18 in Material and Performance: Constructed from quality 40Cr alloy steel for exceptional strength and toughness Hardened to HRC4850 through professional heat treatment, ensuring longlasting durability under heavy workloads Reliable performance even in torque and precision environments Features and Benefits: Ideal replacement part designed for consistent, stable operation Compatible with most ERstyle tool holders, collets, and extension bars Securely holds drill bits, boring tools, milling cutters, and other tooling Promotes accurate machining by reducing vibration and maintaining tool alignment Applications: CNC Lathes: Maintains stable grip on cutting tools for precision turning and shaping operations Milling Machines: Ensures accurate tool retention for smooth, consistent milling results Metalworking and Automotive Manufacturing: Withstands demanding mechanical processes, supporting heavyduty tool usage Suitable for a variety of industrial machines where collet nuts are required for secure tool holding Why Choose This Collet Nut: Precisionengineered to fit ER20A (M25) tool systems Designed to maintain reliability in professional machining environments Offers strong, consistent clamping for improved tool life and cutting accuracy This ER20A (M25) collet nut delivers the strength, precision, and compatibility essential for performance machining, making it a trusted choice for CNC operators, machinists, and manufacturing professionals.