There are different standardized components that can be used for safe and functional design in any construction. These machine elements are made either in stainless steel or steel. The surface protection can be selected. It can either be galvanized or uncoated.
The standard machine elements include the DIN 6885 which are parallel keys, DIN 6888 which are woodruff keys while the DIN 808 are cardan joints. DIN 15058 are axle holders while the DIN 705 are set collars. Taper keys that have a gip head are DIN 6887 while the DIN 268 and 271 are tangential keys.