Definitions for "machine bolt"
Keywords:  hexagonal, wrench, bolt, nut, threads
A threaded hexagonal or square-headed bolt with a nut; it is tightened with a wrench and used to connect metal parts.
A threaded bolt having a straight shank and a square or hexagonal shaped head.
A bolt typically configured with a hex head and nut and a blunt end. Meant to hold two pieces (usually the support structure) by pinning them together, the threads hold only the nut and don't screw into the wood itself.