Plate No. 2 A 7/8-in.-diameter bolt, having a diameter at the root of the threads of 0.731 in., is used to fasten two timbers together as shown. The nut is tightened to cause a tensile stress of 18 ksi in the bolt. Compute the shearing stress in the head of the bolt and in the threads. Also, determine the outside diameter of the washers if their inside diameter is 9/8 in. and the bearing stress is limited to 800 psi. Given: Diameter of bolt = 7/8 inch Diameter at the root of the thread (bolt)= 0.731 inch Inside diameter of washer = 9/8 inch Tensile stress in the nut = 18 ksi Bearing stress = 800 psi Required: Shearing stress in the head of the bolt Shearing stress in threads of the bolt Outside diameter of the washer 1/2 in 5/8 in a. Shearing stress in the head of the bolt Given: Diameter of bolt = 7/8 inch Diameter at the root of the thread (bolt) = 0.731 inch Inside diameter of washer = 9/8 inch Tensile stress in the nut = 18 ksi Bearing stress = 800 psi 9/8 in 0.731 - 7/8 Va in 5/8 in