Why You Should Use Robertson Screws

High Quality Brass Square Slot Pan Head Screws Robertson Drive slot robertson screw by Fred Scheuler In 1906 Peter Lymburner Robertson, wounded by the slippery slot of the primitive screwnail, invented the square recess slot ugga bugga rtp Also, a true robertson screwdriver will hold a robertson screw on the tip better than a square will Share

slot com el tesoro de java This screw is actually a Canadian invention! Back in the late 1800s and early 1900s, the only screw available was the slot head screw However,