Plug Chamfer - Machine Screw and Fractional Sizes - National Coarse Tap Set in a Index Case. High Speed SteelSizes: 4-40, 6-32, 8-32, 10-24, 10-32, 1/4-20, 5/16-18, 3/8-16, 1/2-13, 5/8-11
Unit of Measure