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
Small but precious!
Choosing a suitable engine for aerosleds is a far from simple task. Series engines, for many parameters (in particular, specific power), do not satisfy amateur designers. That is why some...
GREENHOUSE-INDIVIDUAL
Seedlings of cucumbers and tomatoes planted in the middle lane, usually in an indoor soil — in greenhouses or hothouses. Unfortunately, the main material is plastic film, and the more...
