Screw your Phillips, I'd rather screw my Robertson : rtoolporn

slot robertson screw   Dan slot phone

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

In 1908, Canadian Peter Robertson invented a square-head screw drive where the driver and the hole had a slight taper There had been other PTA Robertson Screwdrivers feature ergonomic cushion grip handles, heavy duty chrome vanadium shafts and hardened magnetic tips Available in regular, long and

apk open slot hack by Fred Scheuler In 1906 Peter Lymburner Robertson, wounded by the slippery slot of the primitive screwnail, invented the square recess If you use a Robertson screwdriver, it grips those screws Breakers, especially SquareD Homeline, are usually slottedrobertson only