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
NEW RECIPE QUADCOPTER
Until very recently, it seemed to us that to call any publication "material of the year" is simply impossible, especially in the section of modeling. A variety of types and classes makes...
DIG DON’T HAVE
Always hard to find in a drawer or box required a small detail, especially if they are stored in what is called bulk. However, quite on the workshop wall to attach here a stand and not...
