Standard Trapezoidal section point Hooks with Shank
IS: 3815 / 1969
Dimensions of screw thread run outs and undercuts
All dimensions in mm
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