a9cc56f1____Group_15___2012___GICL_Wiki__3
[0] Wing Nut [1] 1 [2] 1 [4] Steel [5] Durable and strong. [6] Forged and stamped, and then drilled (screw hole) [7] Necessary for the manufacture of this part. Cheap and fairly quick. [3] 
Pivoting/connection point between the foot of the saw and the upper blade guard.
Gate 3 - Group 15 - 2012 - GICL Wiki