12-24 x 1/2 Phillips Pan External Sems Machine Screw Fully Threaded Zinc ABPT and the 40 indicates that

and the 40 indicates that the screw has a length of 40mm

Its black oxide finish also makes it suitable for outdoor use or in environments where corrosion resistance is important

The screws are designed for use in metal applications and have a sharp point that allows them to easily penetrate the metal

securing machinery

and industrial applications where vibration resistance is crucial

12-24 x 1/2 Phillips Pan External Sems Machine Screw Fully Threaded Zinc ABPT and the 40 indicates thatThese 12 24 x 1 2 Phillips pan external sems machine screws are fully threaded and zinc plated. They are designed for use in a variety of applications, including metal, wood, and plastic. The Phillips pan head provides a secure hold, while the zinc plating offers corrosion resistance. These screws are available in a variety of lengths to meet your specific needs.