Firstly, high temperature resistance
High temperature resistance of stainless steel fasteners: it is precisely because the hardness of stainless steel fasteners is strong enough, after production and processing,the fasteners have strong oxidation resistance, and they can work normally under high temperature, so they will not be interfered by high temperature. If stainless steel fasteners can be passivated at the same time after manufacture and before use, it will be better.
Secondly, the negative rate
The negative rate of stainless steel fasteners: the physical properties of stainless steel fasteners have a very high negative rate, so compared with carbon steel wire rods, stainless steel fasteners are five times higher than its negative rate. After testing, we get that there is an expansion coefficient in the fastener. If the temperature is higher, the expansion coefficient of stainless steel fastener will gradually increase with the increase of temperature.
Thirdly, stress capacity
Stress capacity of stainless steel fasteners: for stainless steel fasteners, the load bearing capacity of stainless steel fasteners is medium. Even if it is not comparable with high-strength bolts, the stress capacity of stainless steel fasteners can meet people’s daily needs.

Lastly, mechanical properties
Mechanical properties of stainless steel fasteners: in the mechanical properties, most of us know that the mechanical properties of many fasteners are closely related to the stainless steel wire rod. For example: no rusting, high corrosion resistance, etc., which are closely related to the properties of stainless steel. With the continuous development of fasteners, these mechanical properties will become stronger.

Stainless steel fastener is a special concept which contains a wide range of products. Because of its beautiful, durable and strong corrosion resistance, stainless steel fastener is usually used for fastening expensive machine parts. Stainless steel standard fasteners usually include the following 12 types of parts:

Stainless steel fasteners:
1. Bolt: a kind of fastener composed of head and screw (cylinder with external thread), which is used to fasten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

2. Stud: a kind of fastener without head and with external thread on both ends. When connecting, one end must be screwed into the part with internal thread hole, and the other end must pass through the part with through hole, and then screw on the nut, even if the two parts are firmly connected to form a whole. This type of connection is called stud connection, which is also a detachable connection. It is mainly used in the occasions where one of the connected parts is thick and requires 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 the purpose: machine screw, set screw and special purpose screw. The machine screw is mainly used for the fastening connection between a part with a fixed thread hole and a part with a through-hole, without nut matching (this connection form is called screw connection, which is also a detachable connection; it can also be matched with a nut, which is used for the fastening connection between two parts with through-hole.) The set screw is mainly used to fix the relative position between two parts. Special purpose screws, such as eyebolts, are used for lifting parts.

4. Stainless steel nut: with internal thread hole, the shape is generally flat hexagonal column, or flat square column or flat cylinder. It is used for fastening and connecting two parts to form a whole. Special categories of nuts
High strength self-locking nut is a classification of self-locking nut, which has high strength and strong reliability. It is mainly used for road construction machinery, mining machinery, vibration machinery and so on, which is mainly based on the introduction of European technology.
Nylon self-locking nut nylon self-locking nut is a new type of high anti vibration and anti loose fastening parts, which can be used in various mechanical and electrical products with temperature from – 50 ℃ to 100 ℃. At present, the demand of nylon self-locking nut is increasing rapidly in aerospace, aviation, tank, mining machinery, automobile transportation machinery, agricultural machinery, textile machinery, electrical products and various kinds of machinery, because its anti vibration and anti loose performance is much higher than other kinds of other kinds of machinery
Anti loose device, and the vibration life is several times or even dozens of times higher. At present, more than 80% of mechanical equipment accidents are caused by the loosening of fasteners, especially in mining machinery
The use of nylon self-locking nuts can prevent serious accidents caused by loose fasteners.

5. Self tapping screw: similar to machine screw, but the thread on the screw is special self tapping screw thread. It is used for fastening and connecting two thin metal components to form a whole. Holes need to be made on the components in advance. Because of the high hardness of the screw, it can be directly screwed into the hole of the component to form a responsive internal thread. This connection is also a detachable connection.

6. Wood screw: it is also similar to machine screw, but the thread on the screw is a special rib for wood screw, which can be directly screwed into the wood component (or part), which is used to firmly connect a metal (or non-metallic) part with a through-hole with a wooden component. This connection is also detachable.

7. Washer: a kind of fastener with flat circular shape. It is placed between the supporting surface of bolt, screw or nut and the surface of connecting parts, which can increase the contact surface area of the connected parts, reduce the pressure per unit area and protect the surface of the connected parts from being damaged; another type of elastic washer can also prevent the nut from loosening.
8. Retaining ring: it is installed in the shaft groove or hole groove of machine and equipment, and plays the role of preventing the parts on the shaft or hole from moving left and right.

9. Pin: it is mainly used for positioning parts, and some can also be used for connecting parts, fixing parts, transmitting power or locking other fasteners.

10. Rivet: a kind of fastener composed of head and nail rod, which is used to fasten and connect two parts (or components) with through holes to make them a whole. This type of connection is called rivet connection. It belongs to and can not be disassembled. Because in order to separate the two parts connected together, the rivets on the parts must be broken.

11. Assembly and connection pair: assembly refers to a kind of fastener supplied in combination, such as a machine screw (or bolt, self provided screw) and flat washer (or spring washer, lock washer); connection pair refers to a kind of fastener supplied by combining a certain special bolt, nut and washer, such as high-strength large hexagon head bolt connection pair for steel structure.

12. Welding pin: a kind of fastener composed of light energy and nail head (or no nail head), which is fixed and connected to a part (or component) by welding method, so as to connect with other stainless steel standard parts.