Review on Machine Fillister Phillips Threaded Threads by Anthony Adams

As my tests showed, these screws are poorly threaded and do not hold up well under pressure. They may be suitable for smaller DIY projects but for industrial and scientific applications, they are not reliable .The only pro is that THEY are affordable. The major con is that these screws may cause dangerous malfunctions or accidents in critical equipment. I do not recommend these screws for any important or heavy-duty project..