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
OPENING — SAVE
Offer a design key for removing lids from cans nakatannyh. Device instantly reveals not only the Bank, but also keeps intact the lid and the rubber grommet. At the same time (most...
GAZ-14 “CHAIKA”
Gorky automobile plant in the postwar period in addition to building trucks. middle class car "Victory", and then "Volga" was produced and Executive cars, the first of which was the...