Evaluate Fastener Type for Withdrawal Strength in OSB

What happens here

Prepare a small OSB panel for a pull-out test. Drive three different fasteners into the panel: a ring shank nail, a smooth shank nail, and a structural screw. Use a hammer for the nails and a cordless drill for the screw. Attach the OSB panel to a robust structure (e.g., a skid steer bucket) for leverage. Test the withdrawal strength of each fastener by applying significant force, such as hanging body weight directly from the protruding fasteners. Observe the point at which each fastener pulls out or fails. The smooth shank nail fails quickly, followed by the ring shank nail. The structural screw demonstrates superior holding power, remaining intact while the OSB itself begins to tear, highlighting its strong resistance to withdrawal. A brief visual observation also shows mildew/mold on a piece of OSB, reminding of its susceptibility to moisture-related issues.

Goal: Identify the most effective fastener type for resisting pull-out forces in OSB.