Standard Trapezoidal section point Hooks with Shank Note Undercut according to IS - 1369 - 1961 Calculating formulae for C: For MS, C = 26.73 P For HS, C = 23.17 P # Machined shank diameter (Min) See IS: 4218-1967 ISO metric screw threads $ Boundary dimensions of rolling bearings for general engineering purposes. MS = Mild Steel HS = High Tensile Steel
