What should be the minimum nail size for the installation of sheathing on cold-formed steel studs?

The minimum nail size for the installation of sheathing on cold-formed steel studs is based on structural integrity and the ability to properly secure the sheathing material to the studs. Using No. 8 screws provides the necessary holding power and shear strength required for fastening sheathing materials like plywood or OSB to cold-formed steel. This size ensures that the screws can adequately penetrate the sheathing and engage the steel without risking breakage or failure during service.

Larger screws, such as No. 10 or No. 12, may offer more holding power but are generally not required for this application and can lead to unnecessary material usage and potential installation challenges. On the other hand, No. 6 screws may not provide sufficient strength to meet the structural requirements, making them inadequate for secure fastening in this context. Therefore, No. 8 screws are identified as the standard size that balances strength and practicality for this particular use in construction involving cold-formed steel studs.