HAKO compatible tiller knife Screw with nut Thread: M8 x 1 L (mm): 30 G (mm): 19 : 10.9 Dimensions (mm): M8 x 1 x 30, 10.9 Right knife code: 180HAK-56R Original right knife code: 90-33 978/8 , 90-00 978/8 Left knife code: 180HAK-56L Original left knife code: 90-33 978/8 , 90-00 978/8 Screw and nut code: 18030-830 NS