society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > nut > washer between nut and bolt (3)
A bearing-plate of iron placed under the nut of a bolt or tie-rod.
(a) a washer, typically consisting of one complete turn of a helical spring, for placing between a nut and bolt to prevent the nut from working…
A metal ring or fitting which is tightened under a threaded nut to form a seal, as on a compression joint.