When you do not have a suitable spanner to Unscrew the hex-head bolt will help out any screw with two nuts — preferably square-shaped.
Recommend to read
CALCULATION OF SCREWS
To build templates of the screw (side view) for a given shape of the blade (top view) and the step there are two main methods of calculation: analytical and graphical. Usually based on...
CORD PILOTAGE
In aircraft modeling group of the Moscow city Palace of creativity of children and youth members with a passion to build kordovye aerobatic model aircraft class F2В. Participating in...