A Guide to Threaded Fasteners

Fasteners are essential components of any mechanical structure, machine, or device that requires joining of two or more parts. Threaded fasteners, such as nuts, bolts, and screws, are the most commonly used fasteners due to their simple and reliable design. However, selecting the appropriate fastener for a particular application can be a challenging task, given the wide variety of materials, sizes, shapes, and thread types available. In this article, we will provide a comprehensive guide to understanding threaded fasteners, including their types, materials, sizes, threads, strengths, torque, and applications.


Types of Threaded Fasteners

Threaded fasteners can be broadly classified into three types: nuts, bolts, and screws. Each type has its unique features and applications.


Nuts are internally threaded fasteners with a hexagonal or square shape, used in combination with bolts or screws to secure two or more parts together. The most common types of nuts are hex nuts, nylon-insert lock nuts, and wing nuts. Hex nuts are the most widely used nuts due to their versatility and ease of use.


Bolts are externally threaded fasteners that require nuts