Nuts
Nuts, adj.: what you must be to attempt this job.
Hexagon nut
The standard nut
Square nut
Most commonly used with roofing bolts
Wing nut
Has 2 wings. Designed for tightening by hand
Nylon lock or nylock nuts
The ring of nylon creates friction, preventing the nut coming undone by itself.
Rivet bushes
A nut that fixes to a hole in sheet metal.
Pronged tee
Has spikes and Fits into a hole in wood
Nut insert
Presses into a hole in metal. Has a ribbed outer edge.
Cross dowel
Interscrews
aka Chicago bolt. A hollow bolt, into which screws a solid bolt. Used to fix kitchen cabinets together.
Flanged nut
Dome nut
Decorative bright polished chrome dome on the topside of the nut.
Shear nuts
The tool driven portion of the nut shears off when tight, leaving a nut that can not be undone with any tye of nut driver. A high security nut