Definitions:

1. A bolt with a square or hexagonal head on one end and a threaded shaft on the other end. NOUN
   • The mechanic used a machine bolt with a hex head to secure the engine parts together.
2. A type of fastener characterized by its cylindrical, threaded shaft and a head designed for turning with a wrench or a screwdriver. NOUN
   • Stainless steel machine bolts are preferred in environments where resistance to rust and corrosion is crucial.
3. A type of fastener, similar to a screw, that is typically used to secure two or more components together in a variety of industrial, mechanical, and construction applications. NOUN
   • The construction team used machine bolts to join the steel beams of the building framework.

Synonyms:

• bolt
• fastener
• screw
• threaded rod