Anchor bolts are devices used to attach structures or objects to a foundation or base. They are like heavy-duty screws or nails that keep things securely in place to prevent them from moving or tipping over. Full definition
The automaker said it was sending a letter to owners asking them to bring the car to dealers, where a new anchor bolt assembly would be installed free of charge. (articles.orlandosentinel.com)
Concern: If the seat belt anchor bolt can not be properly secured into the anchor plate, this could place vehicle occupants at an increased risk of injury during a motor vehicle crash. (bestride.com)
When I installed the car seats, it took me a while to figure out where the tether anchor bolts are (they are on the seat backs, but hidden), be careful not to mistake the cargo net hooks for the tether bolt anchors, as I almost did off the bat. (havebabywilltravel.com)