Shear bolt column bracket to dash rail. On all Mini cars with a steering lock there are safety shear bolts on the column which will need replacing if removed. These are the 2 (5/16"unf) bolts 7/8"long thread that hold the steering column bracket to the dash rail. 1.5"(37mm) long overall. These bolts are sold singly, 2 botls will be required per lock.