For attaching hangers to wood studs. Short, heavy gauge nail provides increased holding power without fully penetrating wood. Fastener I.D. System: The Grip-Rite Fastener I.D. System is simple to use and convenient for everyone. Select Grip-Rite hand drive and collated nails feature a number stamped on the head that lets both contractors and building inspectors identify them at a glance. The number stamped on the head is the key to all the relevant information about the fastener, including its size, description, type and item number. The Grip-Rite Fastener I.D. System makes identifying fasteners, both before and after installation, easier than ever. Look for specially marked boxes for Grip-Rite Fastener I.D. System framing and joist nails.