PRO-SERIES UM-TYPE ER20 COLLET CHUCK NUT (3900-0689)

Description

UM-Type ER-20 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 M25 X 1.5 ~ D is 35 mm ~ L is 19 mm Balanced to 18,000 RPM Tolerance is .0003″ Maximum Thread Tolerance Class: 4H-Class Material is 42 CrMo Hardness is HRC 50-52