The plates are only 3mm thick, yet have been tested to a break load of 1200kg. Hinge
pins are not visible. They are welded at both ends and highly polished to blend with the hinge barrel.
Because the pin is locked to one base plate and hinge barrel joint gap is kept to less than 0.2mm, there is
minimal hinge play and rattle with engine vibration. 193471 has a flush service. Sold as a pair.