bolts
n. countablen. short metal pins with a spiral groove that you use with a nut to hold things together. They are like heavy-duty screws for building furniture or fixing cars.
n. threaded metal fasteners designed for insertion through holes in assembled parts, typically secured by a nut. Often contrasted with screws, which usually create their own threads in the material.
He tightened the bolts on the car wheel.
The mechanic checked all the bolts on the engine block to make sure they were tight enough for the long trip.
Structural engineers must calculate the exact tension required for these steel bolts to ensure the bridge remains stable under the weight of heavy traffic and high winds.
Usually used in the plural when referring to fasteners; often paired with the verb 'tighten' or 'loosen'.