sarl delaval theodore fasteners Germany sarl delaval theodore model sarl delaval theodore price

sarl delaval theodore fastener mechanical parts, cylindrical threaded fasteners used with nuts. A type of fastener consisting of a head and a shank (a cylinder with external threads), which must be used with a nut to tightly connect two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, its characteristics are numerous varieties and specifications, different performance and uses, and a high degree of standardization, serialization, and generalization. Therefore, some people refer to a class of tight bolt fasteners that already have national standards as