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
DON’T SPOIL THE VIEW OF THE BALCONY
Quick-drying underwear on the balcony, loggia, but how ugly looks like a house from the street. Offering a simple design linen dryers with removable cords strained at the railing, and...
“SECRETS” MOUSE
The prototype of the computer mouse — a two-dimensional analog of the manipulator, connected to a personal computer (PC or PC) via the serial port corresponding to the RS-232 standard,...
