Two Flanged Shafts Are Connected by Eight 18-Mm Bolts $$90 \mathrm { MPa }$$

Two flanged shafts are connected by eight 18-mm bolts. The diameter of the bolt circle is 240 mm. The allowable shear stress in the bolts is 90 MPa. Ignore friction between the flange plates. The maximum value of $$90 \mathrm { MPa }$$ torque $T _ { 0 }$ is approximately:

A) 19 kN ∙ m
B) 22 kN ∙ m
C) 29 kN ∙ m
D) 37 kN ∙ m T0
T0