What are the categories of Non Standard Fasters？

Stainless steel standard fasteners typically include the following 12 types of parts:

1. Bolt: A type of fastener consisting of a head and a screw (a cylindrical body with external threads), which needs to be matched with a nut and used to tighten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, it can separate these two parts, so bolt connection is a detachable connection.
Stainless steel fasteners
Stainless steel fasteners

2. Stud: A type of fastener without a head and only with external threads on both ends. When connecting, 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 must be screwed on, even if these two parts are tightly connected as a whole. This type of connection is called a bolt connection and also belongs to a detachable connection. Mainly used in situations where one of the connected 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 type of fastener composed of a head and a screw, which can be divided into three categories according to its purpose: machine screws, set screws, and special purpose screws. Machine screws are mainly used for fastening a part with a fixed threaded hole to a part with a through-hole, without the need for a nut to fit (this type of connection is called a screw connection, which is also a detachable connection; it can also be used with a nut to fit between two parts with through-holes for fastening connection.) Set screws are mainly used to fix the relative position between two parts. Special purpose screws, such as lifting ring screws, are used for lifting parts.

4. Stainless steel nuts: with internal threaded holes, generally in the shape of a flat hexagonal column, but also in the shape of a flat square column or a flat cylindrical shape, used in conjunction with bolts, bolts, or machine screws to tighten and connect two parts, making them a whole. Special categories of nuts

High strength self-locking nuts are a classification of self-locking nuts, which have the advantages of high strength and strong reliability. Mainly based on the introduction of European technology, it is used for road construction machinery, mining machinery, vibration machinery equipment, etc. Currently, there are very few domestic manufacturers producing such products.

Nylon self-locking nut Nylon self-locking nut is a new type of high vibration resistant and anti loosening fastening component, which can be applied in various mechanical and electrical products at temperatures of -50~100 ℃. At present, the demand for nylon self-locking nuts in aerospace, aviation, tanks, mining machinery, automotive transportation machinery, agricultural machinery, textile machinery, electrical products, and various types of machinery has increased sharply. This is because its anti vibration and anti loosening performance is much higher than other types of machinery

Anti loosening device, and the vibration life is several times or even dozens of times longer. More than 80% of current mechanical equipment accidents are caused by loose fasteners, especially in mining machinery

The use of nylon self-locking nuts can prevent major accidents caused by loose fasteners.

5. Self tapping screw: Similar to machine screws, but the thread on the screw is a specialized thread for self tapping screws. Used to tighten and connect two thin metal components into a single piece, small holes need to be made in advance on the components. Due to the high hardness of this type of screw, it can be directly screwed into the holes of the components, forming corresponding internal threads in the components. This type of connection also belongs to detachable connections.

6. Wooden screw: Similar to machine screws, but the thread on the screw is a specialized ribbed wooden screw that can be directly screwed into wooden components (or parts) to securely connect a metal (or non-metal) part with a through hole to a wooden component. This type of connection also belongs to detachable connections.

7. Washers: A type of fastener with a flat circular shape. Placed between the support surface of bolts, screws, or nuts and the surface of the connecting parts, it plays a role in increasing the contact surface area of the connected parts, reducing the pressure per unit area, and protecting the surface of the connected parts from damage; 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 a machine or equipment, and plays a role in preventing the left and right movement of parts on the shaft or hole.

9. Sales: mainly used for locating parts, 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, used to tighten and connect two parts (or components) with through holes, making them a whole. This type of connection is called rivet connection, abbreviated as riveting. Belonging to non detachable connections. Because in order to separate the two parts connected together, it is necessary to break the rivets on the parts.

11. Combination components and connecting pairs: Combination components refer to a type of fastener supplied in combination, such as combining a certain machine screw (or bolt, self supplied screw) with a flat washer (or spring washer, lock washer) for supply; Connection pair refers to a type of fastener that combines a specific type of bolt, nut, and washer for supply, such as high-strength large hexagonal head bolt connection pairs used in steel structures.

12. Welding nail: A heterogeneous fastener composed of light energy and nail head (or no nail head), which is fixed and connected to a component (or component) by welding method for further connection with other stainless steel standard parts.