ROBERTSON Machine Screw 8-32 X 78 Truss Head Combination

By Susanna McLeod Special to Ontario Construction News Have you been startled by your screwdriver slipping out of the slot and damaging

slot-head screw was the standard for fastening to wood It's the Even better is the Robertson, or square-drive screw--a favorite of

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

slot คืออะไร But if you've ever cammed a screw-head slot, you know why it's not the only design The official history from the Robertson Screw