Summary The effect of torque on buckling was first recognized while designing hollow propeller shafts for ships. If buckling could be caused by torque, then perhaps torque could be induced by helical buckling. This effect has not been extensively studied because the assumption has always been that the effect was too small to be of concern. This problem required an exact large-displacement solution to the helically buckled pipe because conventional small-displacement analysis has the built-in assumption that these effects are not important. How significant are these effects? Lubinski et al.,1 in their paper on helical buckling, worked a sample problem of a squeeze cementing operation in 2⅞-in., 6.5-lb/ft tubing. The induced torque caused by helical buckling may exceed the makeup torque (in the range of 600 to 2,300 ft-lbf, depending on the grade) for large radial clearances, so induced torque in this problem may be high enough to break the connection! This paper gives complete details for the torque and shear calculation in the Appendices. The body of the paper examines several typical tubing-load situations to evaluate the effect of induced torque and shear on a conventional design.