Hillman Hex Machine Screw Nut 10-24 is designed for securely fastening to a bolt when mechanically joining materials together. This particular type of nut is intended for use with smaller machine screw sizes under 1/4 inch, making it i for precise and reliable applications. Specifically engineered to work with machine screws, these hex nuts provide a dependable solution for various fastening needs. Model Number: 10-24