"In automotive suspension, a steering knuckle is that part which contains the wheel hub or spindle, and attaches to the suspension and steering components.[1] It is variously called a steering knuckle, spindle, upright or hub, as well.

The wheel and tire assembly attach to the hub or spindle of the knuckle where the tire/wheel rotates while being held in a stable plane of motion by the knuckle/suspension assembly. "
https://en.wikipedia.org/wiki/Steering_knuckle

https://www.smcautoparts.com/10237239-10332530-LF-RR-Steerin...

https://www.mister-auto.be/fr/pivot-de-fusee-d-essieu-roulem...

"glossaire de terminologie technique automobile francais / anglais ...
https://www.assomca.com/app/.../glossaire de terminologie te...
Le Glossaire Renault est, au départ, le fruit d'une collaboration entre la Direction ...... DRIVE STEERING KNUCKLE NUT. ÉCROU DE ...... PIVOT DE FUSÉE."

"Lexique Caterpillar.pdf - Scribd
https://www.scribd.com/document/.../Lexique-Caterpillar-pdf
steering knob poignée du volant de direction
steering knuckle pivot de fusée
steering knuckle porte-moyeu
steering knuckle fusée de roue
steering knuckle arm bras de direction
steering link barre de direction
steering metering pump pompe doseuse de direction
steering pivot (or pin) pivot de fusée
steering shaft arbre de direction