A-Type ER-11 Collect Chuck Nut~ Balanced to 18,000 RPM~Tolerance is.0003″ Maximum~ Material is 42 CrMo~Hardness is HRC 50~52~Thread Tolerance Class is4H-Class~Thread is M14 X 0.75~D is 19mm ~L is 11.3 mm Balanced to 18,000 RPM Tolerance is.0003″ Maximum Material is 42 CrMo and the hardness is HRC 50~52 Thread Tolerance Class is4H-Class Thread is M14 X 0.75~D is 19mm ~L is 11.3 mm








