The Robertson Screw

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

8pcs Robertson screwdriver, there is a size to fit every type of Robertson screw

slot mobile png High Quality Brass Square Slot Pan Head Screws Robertson Drive Screw Square Socket Machine Screws, Find Details about Bolt and Nut, Screw from High Quality

slot injector This zinc-plated, round head machine screw has a squareslot drive and a size two driver It is 8-32 x 1 12 inches and available in a box of 100 Technical