Bolts and nuts are mechanical fasteners used together to join two or more parts securely, especially in construction, electrical installations, and machinery.
Bolt
A bolt is a metal rod (usually steel) with:
* A head (hex, square, or round)
* A threaded shaft (external thread)
Functions:
* Inserted through holes in materials
* Works with a nut to clamp materials tightly
Common Types:
* Hex bolt
* Carriage bolt
* Anchor bolt
* Eye bolt