Precision tooling ball used as a reference point for critical inspection, layout, and machining operations. Shoulder type has a precision height-reference shoulder to locate the ball in three dimensions. Concentricity between ball and shank is .0002" TIR. Construction Balls are available with 1/4, 3/8, 1/2, and 3/4" ball sizes (6, 12, and 20mm in metric). The 3/4" ball size is shown here. Made in USA.
MATERIAL - HEAT TREAT
1144 Steel - Heat Treated Rc 54-56