spring pin
Slotted spring pin and rolling pin
Spring pin is a widely used wire fastener in various industries. Spring pins fix or fasten two components by compressing into small diameter holes or gaps. They can also be described as hollow press fit fasteners. MW provides slotted spring pins, which are hollow cylindrical tubes with end-to-end slots for easy installation. Spring pins are also known as rolling pins, open-end pins, tension pins, and C-type pins.

Spring pins have multiple advantages:
Their elastic properties allow them to fit into holes without the need for reaming.
Slotting pins can be doubled to increase shear strength.
They can play a role in both blind hole and through-hole applications.
As long as they are in good condition and maintain elasticity, they can be reused.
In addition, these pins are easy to install and only require drilling a straight hole. Installation can be done manually or automatically.
For better understanding, a pin is a universal fastener primarily used to secure objects in place. Therefore, many industries use pins in their daily operations. Pins come in different sizes, shapes, forms, and materials, each representing a unique purpose and function.

Pin can be divided into semi permanent pin and quick release pin. Semi permanent pins require the use of tools or pressure during installation or removal. But the quick release pin is locked in place using a spring-loaded method.
In manufacturing, manufacturers can use pins to secure various components of a product during assembly. Similarly, in the field of architecture, dowels can secure materials or wood together when not in use. Most products rely on the efficiency of pins to operate effectively, and various types of pins help achieve universal or unique uses.
Different types of pins
There are various types of locking fasteners. You can choose any form of pin, metal or plastic, as long as it meets your needs. But first of all, the following are the types of pin fasteners you can choose from.
cotter pin
These are simple wire pins with two pins. They are used to fix the parts in the machine together, ensuring that they will not loosen for a long time.
locating pin
Positioning pins are used to maintain the correct arrangement of machine parts. They are the simplest types of fasteners commonly used in automotive parts and furniture manufacturing. In addition, these fasteners are sturdy and have precise shapes.
Linqi Pins
By inserting the clip into the shaft, the safety pin can help you easily adjust the equipment components and quickly secure them to prevent them from falling or scattering. They are very useful when using self-locking buckles to secure components together.
spring pin
The spring pin is cylindrical and can be used inward and outward to align and secure different components. These spring types are made of rolled metal strips and are used for assembling various parts.
Steel wire locking pin
Steel wire locking pins are widely essential in many industries and are a suitable means of adjusting or disassembling accessories on equipment. These pin fasteners are a perfect combination of split pins and U-shaped pins. The steel wire locking pin is designed with steel material and has common fastener sizes and standard lengths.
Taper pin
Cone pins are used to align parts in machines that are frequently assembled and disassembled. These pins have a narrow shape at one end. In addition, compared to other types of sales, they cause less wear and tear.
L-shaped handle pin
L-shaped handle pin is a type of locking pin designed to easily secure components or accessories to equipment. They are easy to install and disassemble, and the ball lock mechanism ensures safety, better retention, and reliability. In addition, the operation of this pin is also very simple, just slide the pin into place and twist the handle to firmly lock it.
CLAMP PIN
Clamp pin is composed of a pin and a head, commonly used in machines and parts in the shipbuilding, automotive, construction, and agricultural industries. These clips come in various styles and are designed for connecting or disassembling equipment in temporary or permanent applications. Therefore, they are suitable for applications that do not require precise alignment and require easy disassembly after use.
SPRING PLUNGER
Spring plungers are manually pulled and extended, making them ideal for securing items in narrow spaces. You can use it as a positioning pin, indexing device, and positioning pin. The spring plunger is made of steel material and coated with transparent zinc on the surface. In most cases, it comes with anti vibration locking plates. They can be added to threads.
locating pin
Positioning pins are used to separate or adjust accessories that are connected together. They adopt standard industry sizes and have threads. This pin is equipped with a pull ring for easy use. They are made of low-carbon steel or stainless steel, with strength, corrosion resistance, and durability.
Telescopic spring pin
The telescopic spring locking pin is very suitable for high pressure conditions because it has a safety lock with a fixed pin. This type of sales is mainly used in places where components need to be fixed and adjusted for a long time, and is easy to disassemble or install. It is equipped with a galvanized steel shell and the knob is made of acrylic.

Among the hundreds of different types of fasteners used in the aerospace industry, spiral spring pins were specifically invented to solve the "pin" problem of fixing jet engine turbine blade components in the 1940s. No other fasteners (such as pins, bolts, rivets, etc.) have sufficient strength to resist the forces generated during use, while also having enough flexibility to allow the pins to absorb impact and vibration, thereby isolating the load from the main material. It is this unique combination of strength and flexibility that enables the coil spring pin to maintain the integrity of the hole and ensure that components subjected to dynamic loads remain intact.
Nowadays, spiral spring pins have been widely used in the aerospace industry, with a wide range of applications. They are used to fix two or more components together for evacuation slide mechanisms and cargo belts; They are used as hinge pins for internal locking mechanisms such as luggage racks, seat tilt mechanisms, and tray tables; And for alignment inside hydraulic pumps and engine covers.
The design of the rolling pin fully considers assembly. Compared to other types of pins, the square end, concentric chamfers, and lower insertion force of rolled pins make them an ideal choice for easy installation. In addition, rolled pins can accommodate larger hole tolerances than any other pin, as they compress and conform to the shape of the hole during installation. In summary, roll up pins are the easiest type of pin to install and are designed to be maintainable.
The nominal diameter of the rolled pin represents the recommended aperture of the product it is installed with. The design guide for rolling sales will provide recommended hole tolerance ranges. The design of the rolling pin ensures that the pre installation diameter is larger than the aperture, while the chamfer diameter is smaller than the aperture. During installation, crimping chamfers help align the rolled pin with the hole and facilitate compression of the coil when the rolled pin is driven into place.