The material from which the screws is made tends to be lower than the material used to make the bolt.
Because it is applied to non-structural connections and fairings, detachable panels
And other non-mainly stressed structures.
Features:
1) Its structure is similar to that of bolts. The screws shaft is generally a full-threaded shaft, and the thread is manufactured with 2 levels of free fit precision.
2) There are two kinds of flat ends and pointed ends.
3) When installing, the screws are generally screwsed into the screws holes on the components, and the screws are usually screwsed for fastening purposes.
Classified by use: 1. Mechanical screws 2. Structural screws 3. Self-tapping screws
mechanical screws
Mechanical screws are commonly used on non-structural parts, such as light and small parts and assembly of cast aluminum parts such as gearbox covers.
Features:
1) The screws groove on the end face of the screws head is the same as the structural screws
2) The screws shaft is a fully threaded rod segment
3) The thread has two types of coarse and fine teeth.
Material: low carbon steel, stainless steel, brass and aluminum alloy
Common models are:
(l) AN500 is a coarse-toothed head screws AN501 is a fine-toothed round head screws
(2) AN505 is a coarse tooth 82° countersunk screws AN507 is a fine tooth 82° countersunk screws
(3) AN515 is a coarse-toothed round head screws AN526 is a fine-toothed large round head screws
