Mechanical parts, cylindrical threaded fasteners for nuts. A fastener consisting of a head and a screw (a cylinder with external threads) in two parts, to be fitted with a nut, for fastening two parts with a through hole.
Mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener composed of a head and a screw (a cylindrical body with external threads), which needs to be used in conjunction with a nut to fasten and connect two parts with through holes.
