ROBERTSON Machine Screw 8-32 X 1-18 Truss Head

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Also, a true robertson screwdriver will hold a robertson screw on the tip better than a square will Share

Until the square drive screw was invented, nearly all screws were slot head or straight drive screws Square drives, also known as Robertson Robertson Square Drill Bit Set Square Screwdriver Bit Sizes: #0, #1, #2, #3, and #4 : : Home

buffalo king slot demo Types of Screw Drive · Slot head screws are driven by a flat-bladed screwdriver · Robertson drive head screws have a square hole and are driven Slot heads are rubbish to anyone who installs large numbers of fasteners and drivers on Phillips fasteners cam out very easily, usually making a