Use the same dataset An M14 x 2 steel hex head belt with a n

Use the same dataset. An M14 x 2 steel hex head belt with a nut and no washers is used to clamp together two 30 mm steel plates. Using fastener information found in the text for beth the belt and nut (chapter and appendix), verify the length of the fastener must be greater than 42.8mm, then use 45 mm total length for the start point of all calculations. Using standard belt length sizing, Calculate the recommended threaded length for the belt shank, in mm

Solution

The minimum length of the threaded portion i.e thickness of the nut to avoid the failure of the the threads in shear is 0.8*Diameter of the nut.

thickness of the nut =0.8*14=11.2

there fore on average the recomended thread length to avoid failure is same as dia of the nut=14mm

minimum length of the fastner =30+11.2=41.2mm