With all thread there is no bolt head. It is just a threaded rod. I get mine from Micro_Fasteners in 12" pieces. They also sell the nylon wing nuts and washers. One piece will do your plane. Cut one in half so you have 2 each 6" pieces. Insert about 5" into the wing and allow about an inch inside the fuselage. At the field secure the wing panels with a washer and wing nut.

Wing incidence: This refers to the thrust line of the aircraft. Most planes are set at 0-0-0 which means the engine, wing and stabalizer are set at 0-degree incidence. I use a Robart incidence meter to get close and then use a digital level to really fine tune the setting. The better the setting generally the better (accurately) the plane will fly. {Don't confuse this with right thrust which is used to offset engine tork and "P" effect. Chip Hyde did an excellent article on thrust vs. mixing in a recent issue of 3D Flier magazine.}

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