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What is the difference between screws, bolts, nuts, and nuts

What is the difference between screws, bolts, nuts, and nuts

What is the difference between screws, bolts, nuts, and nuts

What is the difference between screws, bolts, nuts, and nuts

What
1. Screw: Actually. The standard statement is that there are no screws. Screws are commonly called "screws" from the appearance point of view, which is a large-scale concept.
2. Screws: All fasteners composed of round head and threaded rod/round rod are called screws, which must be tightened with a screwdriver and an Allen wrench, such as slotted cylindrical head screws, slotted countersunk head screws, and cross recessed countersunk head screws Screws, hexagon socket head screws, hexagon socket countersunk head screws, etc.; The screw is to screw the thread directly into the threaded hole of one of the connected parts, without the use of a nut.
3. Bolt: The head is generally hexagonal, the rod is externally threaded, and the fasteners tightened with a wrench are bolts. They are widely used in mechanical manufacturing for detachable connections, usually with nuts (usually plus a washer) Or two washers).
4. Nut and nut: The shape of the nut is usually hexagonal, and the inner hole is internal thread. It is used to cooperate with bolts and tighten related parts. The nut is commonly called, the standard should be called "nut".
 
Screws, nuts, nuts, nuts are all standard parts, also known as fasteners
Classification according to national standards GB 5780
Usually, the prominent outer lines are bolts (common name screws)
And the pattern inside the bolt is a nut (common name nut)

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