bolts![click to hear](/images/speaker.jpg)
Metal plugs ending in a head and threaded so they can be tightly screwed into nuts to secure fastenings and assemblies.
bolt ![click to hear](/images/speaker.jpg)
Metal threaded plug ending in a head; it is tightly screwed into a nut to secure fastenings and assemblies.
nut ![click to hear](/images/speaker.jpg)
Hollow cylinder of metal whose lining is threaded to screw onto a corresponding bolt.
head ![click to hear](/images/speaker.jpg)
Widened end of the bolt, of various shapes and sizes.
shoulder bolt ![click to hear](/images/speaker.jpg)
Bolt whose head comprises a section of smaller diameter for concentrating the tightening pressure.
threaded rod ![click to hear](/images/speaker.jpg)
Elongated part whose surface has a spiral protrusion for screwing into a corresponding nut.
shoulder ![click to hear](/images/speaker.jpg)
Cylindrical nonthreaded protrusion used as a bracket as the bolt is being tightened.