Industrial & Scientific" /> Provides a Strong Machine Thread In Soft Woods Ideal For Use in Pine, Plywood, Composition Board, and MDF Designed For Use In Applications Such As Ready-To-Assemble Furniture, Drawer Pulls, Display Case, and Shipping Crates Simply Drill the Appropriately Sized Hole and Install with Hex Key or Optional Drive Tool Tapered External Threads Resist Pull-Out Caused By Vibration