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
HYDRO CART “MUSTANG”
It was named a hydrocart, although it looks more like a kind of water motorcycle. This sports micro-vessel was built at the Donetsk Regional Young Technicians’ Station in the “Small...
Mi-2
To develop a single-rotor Mi-2 helicopter with two turboshaft engines, designed to replace Mi-1, launched in 1960, its First flight took place in September 1961 Serial production began...
