8-9X1 1/4 Square Round Washer Pocket Hole Face Frame Coarse Thread Type17 Partial Thread Plain (Pack Qty 5,000) BC-0820DFQRW17P

An externally threaded fastener with a dome-shaped head with a square recess and an integrally formed washer. The shank has an unthreaded section directly below the head, a coarse thread pitch and a chip cavity cut out where the final several threads, ending at the tip. The coarse thread variety is designed for use in soft woods, particle board and plywood. The round washer head provides the maximum bearing surface to fasten it tightly into the pocket. These are also referred to as “pocket hole” screws due to the type of Such fastening methods don’t require access to the inside of the joint to make repairs or adjustments.