Cast in many industrial products have long been used mortgages (anchor) bolts with special heads, such that not only pull, but rotate can’t.
With the advent of high strength composite self-hardening compositions that bolt you can “lay” in the body of the finished product (plastic or metal) and making it pre-nest, and then simonaityte.
Recommend to read
CLEAN — THE GUARANTEE OF QUALITY
A good master always holds his instrument clean. Thoroughly washed with cushion will give a uniform coating of the painted plane, and that it is not collecting dust during storage,...
SANI — FORWARD!
In his letter to the editor a resident of the village of Blagoveschenka of Altai Krai V. N. Ermakov calls himself a regular and faithful reader of our magazine. However, Viktor's being...