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Split Pins
Split pins, also referred to as cotter pins or split cotters, are a type of metal fastener designed to secure and connect various components in mechanical and engineering applications. These pins comprise a thin, straight metal pin with a split or forked end (prong). The split end is inserted into a hole or through a shaft, and once in place, the two legs of the split are bent outward to prevent the pin from slipping out. A split pin comes in multiple sizes and materials, including stainless steel, carbon steel, aluminium, and brass, and is often plated with zinc to protect against corrosion. For instance, a bright zinc-plated steel split pin is known for its reliability and ease of use in securing mechanical connections.
Benefits of Split Pins:
Split pins are secure fastening systems offering unparalleled benefits in terms of:
- Securing and Retaining Parts (nuts, bolts, and other fasteners)
- Accuracy and Reliability.
- Ease of Use and Removal.
- Cost-Effectiveness.
- Rust and Corrosion Resistance.
- Made of highly durable materials.
- Flexible and Customisable.
- Versatile and Lightweight.
Popular Types of Split Pins:
Split pins come in various types, primarily categorised based on their shape and intended use. Some common split pin types include:
- Standard Split Pins – These are the most common split pins with a simple, straight design. They comprise a long, straight pin with two tines at one end bent outwards after passing through a hole. Standard split pins secure nuts, bolts, and other fasteners in multiple settings.
- Hairpin Cotter Pins – As the name suggests, hairpin cotter pins have a hairpin-like shape and are used in applications requiring frequent assembly and disassembly. They are bent into a U-shape, making them easier to install and remove than standard split pins.
- Bowtie Cotter Pins – They have a bowtie-shaped head, providing additional strength and security than standard split pins. They are commonly used in heavy-duty applications to prevent the pin from falling out.
- Circle Cotter Pins – Circle cotter pins have a circular or ring-shaped head, making them easy to grasp and manipulate. They are often used in situations where frequent adjustment or removal is necessary.
- Clutch-Head Cotter Pins – Have a unique head design resembling a clutch or gear. They are designed for situations where a more secure fastening is required.
- Safety R Clips – Safety R clips are similar in function to split pins but have an R or U-shaped design. They are commonly used in automotive and agricultural applications to secure hitch, clevis pins, and other fasteners.
- Clevis Pins – While not split pins, they are sometimes used in conjunction with cotter pins or other locking mechanisms. Clevis pins have a head at one end and a hole for a cotter pin or other fastener at the other end.
Typical Applications of Split Pins:
Split pins are versatile pins that offer multiple functions in a wide array of applications. They are commonly used in scenarios where secure fastening, easy removal, and the ability to withstand vibration and movement are required. Some of the typical applications in various sectors include:
- Securing Nuts and Bolts
- Locking Castle Nuts
- Retaining Hitch Pins
- Safety Applications
- Automotive Industry
- Construction
- Furniture Assembly
- Marine and Boating
- Sports Equipment
- Home DIY Projects.
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