Screws are commonly known as screws, and those with external threads can be called screws.
The shape of the nut is usually hexagonal, and the inner hole is an inner thread. It is used to cooperate with the bolt and tighten the related parts.
The nut is a common name, and the standard should be called nut.
The head of the bolt is generally hexagonal, and the shank has external threads. There are full silk and half silk, preferably according to the national standard code.
What is the difference between screws, bolts and studs
The screws are small, with flat head, cross head, etc. on the head, and external thread on the shank.
The stud should actually be called a double-ended stud, with external threads on both ends, and a polished rod in the middle. The long end of the thread is used to connect with the deep hole, and the short end is connected to the nut.
Screw is a more general term.
The correct term should be bolts, screws, and nuts.
Bolts and screws are round elongated objects with equally spaced threads engraved on them.
The bolt is a flat-headed cylinder; the screw has a pointed front like a nail.
Bolts must be used with screw caps or on objects that are already threaded.
Screws are used on relatively soft or thin objects. When using, they use their own threads to rotate while drilling forward.
The thread on the bolt is relatively shallow without sharp edges; the thread on the screw is sharper and deeper, which is conducive to drilling into the object.