Hillman Stop Nut 10-24 is designed for secure fastening applications where preventing loosening is essential. These nylon insert stop nuts, commonly referred to as stop nuts, feature a nylon insert at the top that grips the bolt threads firmly. This unique design helps prevent the nut from backing off or loosening due to vibration, making it i for mechanical joints that require reliable fastening. The Hillman Stop Nut 10-24 ensures durability and stability in your projects by maintaining a tight hold even under stress. Model Number: 10-24