Fasteners are one of the common mechanical components in industry and daily life, and their main function is to fix two or more parts together. Fasteners play a crucial role in fields such as home decoration, mechanical equipment, automotive industry, and aerospace. This article will provide a detailed explanation of the types, uses, and application fields of fasteners.

1、 Bolts and nuts

Bolts and nuts are common fasteners. A bolt is generally composed of a head, a screw, and threads, mainly used to connect two or more objects. A nut is usually used in conjunction with a bolt. It is a circular metal object with internal threads that can mesh with the external threads of the bolt to achieve a fixed effect.

Bolts and nuts have a wide range of applications, and almost all mechanical equipment, construction projects, automotive parts, etc. cannot do without them. Common types of bolts include hexagonal bolts, internal hexagonal bolts, etc. They have different materials and specifications depending on their size and application requirements. For example, hexagonal bolts are suitable for situations that require high pressure, while internal hexagonal bolts are suitable for places with limited space.

2、 Self tapping screws

Self tapping screws are a special type of fastener, characterized by the ability to cut internal threads on the fixed object during installation, thereby firmly bonding with the fixed object. Unlike traditional bolts and nuts, self tapping screws do not require a matching nut and can be directly screwed into the material.

Self tapping screws are widely used for fastening thin metal, plastic, wood and other materials. Due to its ability to automatically cut threads, there is no need for additional drilling during installation, resulting in high installation efficiency. There are many types of self tapping screws, including cross groove self tapping screws, hexagonal self tapping screws, etc. Different types of self tapping screws are suitable for different usage environments and requirements.

3、 Rivet

Rivet is a type of non threaded fastener that securely connects two parts by riveting them together. When installing rivets, specialized riveting tools are usually needed to deform the end of the rivet and fix it on the connecting piece, thereby achieving permanent fixation.

The application history of rivets is long, especially in fields such as aviation, automotive, and construction, where rivets are still widely used. Common types of rivets include semi round head rivets, flat head rivets, pull rivets, etc. Due to their strong connection ability and high durability, rivets are particularly suitable for situations where threaded connections are not possible, such as connecting thin metal plates or aluminum alloy materials.

4、 Gaskets and locking washers

Gaskets are fasteners used to distribute pressure, reduce friction, and prevent component loosening. It is usually used between bolts and fixed objects, which can effectively protect the connecting parts from wear and tear. Common washers include flat washers, spring washers, etc.

Lock washer is a special type of washer that has anti loosening function, which can prevent bolts or nuts from loosening due to vibration and other reasons during use. Lock washers are commonly used in environments that require vibration, such as automobiles and mechanical equipment. Different types of locking washers, including metal locking washers, nylon locking washers, etc., have different anti loosening effects.

5. Anchors

Anchors are essential fasteners used to secure objects to a variety of substrates, such as concrete, brick, or drywall. They provide a strong and stable connection, allowing for the attachment of heavy items, such as shelves, cabinets, or machinery, to walls or floors. There are several types of anchors, each designed for specific applications and materials. For instance, expansion anchors are used in concrete and masonry; they expand when a bolt is inserted, creating a tight fit that resists pull-out forces. Conversely, toggle bolts are ideal for hollow walls, as they feature wings that open inside the wall cavity, distributing the load over a larger area and preventing the anchor from pulling through. 

Since its established in 2007, Nantong JinDi Fastener Co., Ltd has been deeply involved in the field of fasteners. Our products cover standard bolts, nuts, and customized special fasteners, with a complete range of categories that can meet the diverse needs of various industries. All products are made according to international standards, using high-quality materials and precision processes to ensure strength, accuracy, and durability.. Our business not only covers the domestic market, but also exports overseas. Choosing Nantong JinDi Fastener means choosing a reliable fastener partner.