Elevator Bolts
Elevator bolts are a type of fastener with a wide and countersunk flat head, a shallow conical bearing surface, a square neck, and a unified thread pitch. The square neck is designed to prevent the bolt from turning when tightened, while the tapered shank helps to ensure a tight fit in the hole.
Frequently Asked Questions About Elevator Bolts
What are elevator bolts used for?
Elevator bolts are commonly used in the agricultural and industrial industries when attaching conveyor belts to various equipment, such as buckets. They are called “elevator bolts” due to their common usage in grain elevators.
What materials and finishes are elevator bolts available in?
AFT offers elevator bolts in AISI 1006-1050 or equivalent steel or stainless steel. They come in either plain or Zinc Cr+3 finishes, with the latter providing additional corrosion resistance.
What sizes are available?
AFT offers elevator bolts in diameter-thread sizes ranging from 1/4”-20 to 1/2”-13, and lengths ranging from 3/4-3 1/2”. To measure the thread length of the bolt, it will equal twice the basic bolt diameter plus .25”.
Do elevator bolts come with nuts and washers?
No, they do not. However, they are designed to be used specifically with a specific type of nut called elevator nuts. These are wider and thinner than a standard nut, and when used in conjunction with elevator bolts provide a secure and tight fit.
What’s the difference between an elevator bolt and a carriage bolt?
The main difference between the two types of bolts is their head. A carriage bolt has a thick and domed head, whereas an elevator bolt has a flat and thin head.
Note: To determine the thread length of the bolt, the thread length will equal twice the basic bolt diameter plus .25”.