Elevator Bolts have large slightly countersunk flat heads with a square neck to stop the bolt from turning as it is tightened against the soft canvas. The bolts were originally designed to hold buckets on to the canvas belts used in grain elevators and other conveyer systems.
Elevator Bolts Diameters
Elevator Bolts are available on the FCH Network with Imperial/US diameters that range from #10 to Phosphate and with Metric diameters that range from M6 to M24. The length of Elevator Bolts is usually measured from the point to the underside of the head.