Retention Knob - CAT 40, 5/8-11 Thread, 0.75 Knob Diameter

This CAT40 Retention Knob / Pull Stud Bolt is designed for secure and reliable tool holder performance in CNC machining. Manufactured in South Korea with precision engineering, it features a 5/8-11 thread size, 1.89 overall length, and a 0.75 knob diameter for optimal fit and strength. Built from high-grade materials to withstand heavy machining loads, this retention knob ensures stable tool clamping, reduced vibration, and extended tool holder life. Compatible with standard CAT40 taper tool holders, it is an essential replacement or upgrade part for maintaining peak machine performance.