Stainless steel standard fasteners
Stainless steel standard fasteners are a category that includes stainless steel standard fasteners, which are beautiful, durable, and highly corrosion-resistant. They are usually used to fasten more expensive machine parts. With the progress of society, higher requirements are also put forward for stainless steel standard fasteners.
Stainless steel standard fasteners usually include the following 12 types of parts:
1. Bolts: A type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten two parts with through holes. This type of connection is called a 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.: A type of fastener without a head, with only external threads on both ends. When connected, it One end must be screwed into the part with an internal threaded hole, and the other end must pass through the part with a through hole, and then the nut is screwed on, even if the two parts are fastened together as a whole. This type of connection is called a stud connection, which is also a detachable connection. It is mainly used in situations where one of the connected parts is thicker, requires a compact structure, or is frequently disassembled and bolt connections are not suitable.
3. Screws: It is also a type of fastener consisting of a head and a screw. It can be divided into three categories according to its use: machine screws, set screws and special-purpose screws. Machine screws are mainly used for the fastening connection between a part with a set threaded hole and a part with a through hole, and do not require a nut (this type of connection is called a screw connection, which is also a detachable connection; it can also be used with a nut for two parts with through holes. The fastening connection between parts. ) Set screws are mainly used to fix the relative position between two parts. Special purpose screws such as eyebolts are used for lifting parts.
4.
Stainless steel nuts: with internal threaded holes, the shape is generally flat hexagonal, but also flat square or flat cylindrical. They are used with bolts, studs or machine screws to fasten two parts together to make them a whole. Special categories of nuts
High-strength self-locking nuts are a category of self-locking nuts, which have high strength and strong reliability. It is mainly based on the introduction of European technology. It is used for road construction machinery, mining machinery, vibration machinery and equipment, etc. There are very few domestic manufacturers of such products.
Nylon self-locking nuts Nylon self-locking nuts are a new type of high vibration and anti-loosening fastening parts that can be used at temperatures of -50 to 100°C In various mechanical and electrical products. The demand for nylon self-locking nuts in aerospace, aviation, tanks, mining machinery, automobile transportation machinery, agricultural machinery, textile machinery, electrical products and various types of machinery has increased dramatically. This is because its anti-vibration and anti-loosening performance is much higher than other anti-loosening devices, and its vibration life is several times or even dozens of times higher. More than 80% of the current accidents of mechanical equipment are caused by the loosening of fasteners, especially in mining machinery.
5.
Self-tapping Screws: Similar to machine screws, but the threads on the screw are special self-tapping screw threads. Used to fasten and connect two thin metal components to make them a whole. Small holes need to be made in advance on the components. Because this screw has a high hardness, it can be directly screwed into the hole of the component to form a corresponding internal thread in the component. This connection form is also a detachable connection.
6. Wood screws: Also similar to machine screws, but the threads on the screw are special wood screw threads, which can be directly screwed into wooden components (or parts) to fasten a metal (or non-metal) part with a through hole to a wooden component. This type of connection is also a detachable connection.
7.
Washer: A type of fastener in the shape of an oblate ring. Placed between the support surface of the bolt, screw or nut and the surface of the connected part, it increases the contact surface area of the connected parts, reduces the pressure per unit area and protects 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 the machine or equipment to prevent 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 type of fastener consisting of a head and a 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, or riveting for short. It belongs to a non-detachable connection. Because in order to separate the two connected parts, the rivets on the parts must be destroyed.
11. Assemblies and joints: Assemblies refer to a type of fasteners supplied in combination, such as a combination of a machine screw (or bolt, self-supplied screw) and a flat washer (or
Spring Washer, lock washer); joints refer to a type of fasteners supplied in combination with a special bolt, nut and washer, such as high-strength large hexagonal bolt joints for steel structures.
12. Welding nails: Due to the heterogeneous fasteners composed of light energy and nail heads (or no nail heads), they are fixed and connected to a part (or component) by welding so that they can be connected to other stainless steel standard parts.
