The connection is made using a bolt and nut and two washers as shown in $($Figure $1).$ The allowable bearing stress of the washers on the boards is $({}_b{)}_{\text{a}\text{l}\text{l}\text{o}\text{w}}=3\mathrm{.}9$ksi, and the allowable tensile stress within the bolt shank $S$ is $({}_t{)}_{\text{a}\text{l}\text{l}\text{o}\text{w}}=22$ksi. The bolt shank has a diameter of $0\mathrm{.}31in,$ and the washers have an outer diameter of $0\mathrm{.}75in.$ and inner diameter $($hole$)$ of $0\mathrm{.}50in.$

Figure

$1$ of $1$

Determine the maximum allowable tension in the bolt shank.

Express your answer in kilopounds to three significant figures.

$P_{\text{m}\text{a}\text{x}}=$