What is the standard width of a stud in wall framing?

The standard width of a stud in wall framing is typically 2 inches by 4 inches. This size is commonly used due to its balance of strength and dimensional efficiency, making it suitable for residential construction. The 2x4 stud can be easily handled and provides adequate support for most wall structures, allowing for a variety of insulation materials and ease of installation for electrical and plumbing systems.

The dimensions represent the nominal size; the actual width is slightly less due to the milling process. This standard size has become a widely accepted practice in the industry, making it easier for builders to source materials and ensuring compatibility between different construction projects. The other sizes listed are less common for standard wall framing, with each having specific applications in different construction scenarios, but they do not match the widely recognized standard for wall studs.