The question in the title says it all. I've got a a configuration where I'm using a bolt to support a load. The way its set up, the bolt will have a very short cantilever on it. When I calculate the bending stress in the bolt, it is over twice the yield stress for the material. The calculated shear is quite low. A similar configuration has been done at our plant in the past with no issues. So this got me wondering if there is a point at which bending stress is not applicable. If it was applicable, clearly the bolt would have failed the last time this operation was completed.
*edit: I have attached a sketch. It Though there might be a generic rule about length of beams when bending might not apply.
*There is a machine called a tugger which is an electric motor with a reel. It is used to pull long heavy lengths of cables out through conduit. It will be placed on grating that is supported by c-channel. A threaded rod will be attached to the tugger and one of the c-channel will be used to hold the tugger in place as pulls the cable. The second threaded rod (on the left in the image) along with the lower support piece are merely to hold the rod in place that will take the load. My assumption in that all the load will go to the cantilever shown in detail A. Again this has already been done with no issues. I'm new at the job and have some free time so I wanted to actually try the calcs. Current engineer just "knows" these things.
**I mistyped when I said the bending stress is twice yield. I meant to say it is twice the allowable.