This combination is consistent with the essence of modernization, which want to offer such a famous fixture as a screw. It is clear to everyone that it holds better than a nail, but it requires more effort and time for screwing. If it is to drive with a hammer, the material is crushed, it does not form a threaded groove. My screw (1) with longitudinal grooves on the threaded part, produced by forcing through a die (2). It is possible to drive a nail. You only need a little then turn the bolt with a screwdriver: the remaining part of the coils will cut into the material and will hold securely.
C. CUTTINGS, Leningrad
Recommend to read
THE WOODPILE BY THE FIREPLACE
No matter how neatly were stacked the firewood on the floor near the fireplace or stove, they still are not in harmony with the warm atmosphere of the home. Another thing, if they are...
PLOW JALALABADI
Readers of "M-K" has long been familiar with the enthusiast a homemade tilling equipment, designer, lover of Nizhny Tagil Grigory Ivanovich ODEGOVA. After all, he managed to develop one...
