05-10-2015, 11:33 AM
Big trucks call them "hub piloted", using flat faced nuts and studs. What happens there is if the nuts aren't tight enough, the wheel slips and shears the studs off...
Apparently the industry decided that the cone shaped nuts/bolts tend to concentrate loads over very few studs due to machining inaccuracies. In other words, the tapers bend the studs. It's better to bolt them flat. Wheels and drums usually have ample clearance around the studs to avoid any contact, and just a couple thou clearance on the hub.
Apparently the industry decided that the cone shaped nuts/bolts tend to concentrate loads over very few studs due to machining inaccuracies. In other words, the tapers bend the studs. It's better to bolt them flat. Wheels and drums usually have ample clearance around the studs to avoid any contact, and just a couple thou clearance on the hub.