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When servicing or repairing heating equipment, having the right fasteners is essential. These plug screws are designed for use in boiler and burner applications, providing a secure fit for various components. Whether you are replacing worn-out screws or performing routine maintenance, these plug screws help ensure that parts remain tightly fastened, reducing the risk of leaks or loosening over time. They are a common spare part for many heating systems, making them a practical addition to your toolkit for boiler maintenance and repair.