This is simply not good news for the transmission of pressure as the stress focus is very superior. This may lead to the deformation of your screw. Bronze is usually selected for its normal lubricity; sintered bronze is frequently applied much too considering that it could be impregnated with lubricants. https://typesofwoodscrew48147.wizzardsblog.com/29367904/types-of-screw-heads-square-options