Description
Heat treated and case hardened to HRC 55 to 60. Hardened and precision Ground on all 6 sides of each block. Accuracy with squareness on all sides within .0002" per inch. 23 holes consists of 5 tapped holes that are 5/8"-11 for clamping and 18 untapped holes. Cross drilling design gives minimum weight and maximum strength. Hardened and precision Ground on all 6 sides of each block Accuracy with squareness on all sides within .0002" per inch 23 holes consists of 5 tapped holes that are 5/8"-11 for clamping and 18 untapped holes Cross drilling design gives minimum weight and maximum strength