In Problem, let it be assumed that the threads stop immediately above the nut.
Let the bolt in Fig. 5-8 be a 1 in.-12UNF made from cold-drawn 2317 steel. The load on the part varies continuously from 10,000 to 20,000 lb. σult = 95,000 psi, σyp = 75,000 psi, and σe = 36,000 psi. The threads are machined. K = 3.85. Area of the steel part is 1.2 in2 Find the maximum permissible value of Fo if the bolt is to be safe for continuous operation with an Fs equal to 2.
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