Check out any of the forty Front Knuckle components enlisted.
Parts such as the Front Knuckle: Band A, Dust Seal,38x55x6, Guard R,fr Outboa, Pin Cotter 3.0mm are included in the Trx680fa 2010 (a) European Direct Sales Front Knuckle parts fiche.
In this schematic the "Bolt,socket 6x14." is used most often.