- barrel-shaped head of rivet
- бочкообразная головка заклёпки
Англо-русский строительный словарь. 2013.
Англо-русский строительный словарь. 2013.
Nut (hardware) — A nut threaded onto a bolt A nut is a type of hardware fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads… … Wikipedia