If the head of the screw to give with the help of nalilsya the form shown in the figure, then any attacker will not be able to turn. On such hardware it is recommended to set sensible things sailing and motor boats, hook locks.
Recommend to read
AS A NEWLY-MINTED
Just so you can say about worn parts restored by the method developed at the Chelyabinsk Institute of mechanization and electrification of agriculture. With the larger axles,...
LAND THE BOATS START
In the February issue of "Modeller-designer" we met article on the development of a new class of car — unmanaged vetrogonov. Don't know how reacted to the most interesting suggestion of...
