What are the characteristics of fasteners?

Hot-dip galvanizing is mainlyFastenersA process technique for surface treatment in manufacturing. There are four common types of hot-dip galvanized fasteners: electro-galvanized, powder galvanized, mechanically galvanized, and hot-dip galvanized. In daily life, different hot-dip galvanized surface treatments are carried out on fasteners according to the different requirements of customers.

The main features of hot-dip galvanized fasteners are:

1. Fastener reliability is good: the zinc coating is metallurgically combined with the steel and becomes a part of the steel surface, so the durability of the coating is relatively reliable;

2. Fastener protection: every part of the plated parts can be galvanized, and even the recesses and sharp corners can be protected;

3. Fastener processing cost is low: the cost of hot-dip galvanized rust is lower than other paint coatings;

4. Fasteners save time and effort: the galvanizing process is faster than other coating construction methods, which can avoid the time required for coating on the construction site after installation;

Fastener durability: In the suburban environment, the standard anti-rust thickness of hot-dip galvanized can be maintained for more than 50 years without repair; in urban or offshore areas, the standard galvanized anti-rust coating can be maintained for 20 years without repair;

6. The toughness of the fastener coating: the galvanized layer forms a special metallographic structure, which can withstand mechanical damage during transportation and use.

Type of fastener:

1. Bolt: A fastener composed of a head and a screw (a cylinder with external threads), which needs to be matched with a nut to fasten and connect two parts with through holes. Such a connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is detachable.

2. Stud: A fastener with no head and only external threads at both ends. When connecting, one end of it is screwed into the part with the internal thread hole, and the other end passes through the part with the through hole, and then the nut is screwed on, even if the two parts are firmly connected into a whole. This connection is called a stud connection, and it is also a detachable connection. It is mainly used for occasions where one of the connection parts has a large thickness, requires a compact structure, or is not suitable for bolt connection due to frequent disassembly.

3. Screw: It is also a kind of fastener composed of head and screw. It can be divided into three categories according to use: machine screw, set screw and special purpose screw. This machine is mainly used for the fastening connection between the parts with fastening screw holes and the parts with through holes, without the need for nut matching (this connection form is called screw connection, and it is also a detachable connection; it can also be used with The nut is matched for the fastening connection between the two parts with through holes) the set screw is mainly used to fix the relative position between the two parts. Special screws such as eye bolts are used to lift parts.

The above is aboutFastenersSome of the knowledge points, I hope you can help.