The Robertson screw

HARDWARE MSR-004100 4-40 1 ROBERTSON-SLOT BOLT slot robertson screw 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 deposit 5ribu Jonard's Robertson Screwdrivers are made with an S2 steel shank with a chrome finish for exceptional strength and long life Our Robertson Screwdrivers

slot mini They're so good nobody will buy the old straight slot or Philips Slide a screw onto the screwdriver Hold it horizontally Holds fast Can you