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Spring plungers, also known as ball plungers or spring-loaded detents, are a type of mechanical fastener commonly used in a variety of applications, including automotive, aerospace, and manufacturing industries. These devices are designed to exert a controlled force on a target surface, allowing them to securely fasten parts or hold them in place.
Spring plungers are composed of a threaded body, a spring-loaded plunger, and a ball or pin. The plunger is pushed down against the spring by an external force and, when released, the spring pushes the plunger back up, causing the ball or pin to protrude from the body and engage with the target surface.
Spring plungers are available in different sizes, materials, and configurations, including threaded, non-threaded, metric, and inch sizes. They can be made from materials such as stainless steel, brass, and nylon, among others, and may be finished with coatings or platings to enhance their durability and resistance to corrosion.
These devices are used in a wide range of applications, such as locking mechanisms, indexing mechanisms, positioning devices, and pressure control devices, among others. They can be used in conjunction with other mechanical components, such as bearings, gears, and cams, to create complex systems.
Overall, spring plungers are a versatile and reliable type of mechanical fastener that are widely used in various industries and applications. They provide a high level of precision, control, and flexibility, making them a popular choice for engineers and manufacturers.