you told us that dia-5.6 hole refrence is not given in this diagram but when you focus on the diagram is already given in this. ( that is dia 40 pitch circle )
You've taken sheet thickness 4mm jabki bending radius is given 5mm. And we know by default bending radius is equal to sheet thickness. Toh sheet thickness 5mm hona chahiye, tabhi aapka 100mm wala dim 99.9 something aa raha h.
