UM-TYPE ER-16 COLLET CHUCK NUT (3900-0688)

UM-Type ER-16 Collect Chuck Nut Balanced to 18,000 RPM Tolerance is .0003" Maximum Material is 42 CrMo Hardness is HRC 50-52 Thread Tolerance Class is 4H-Class Thread is M22 X 1.5 D is 32 mm L is 17 mm Shipping Weight: 0.1 lbs