What does "coarse thread" mean in relation to bolts?

The term "coarse thread" refers to threads that are spaced further apart compared to fine threads. This spacing is designed to provide a greater tolerance for misalignment and typically allows for quicker assembly and disassembly of bolts and nuts. Coarse threads also tend to have greater resistance to stripping in softer materials and can handle larger, heavier loads effectively.

Coarse threads are especially advantageous in applications where speed of installation and durability are priorities. They are commonly used in situations where quick assembly is essential, such as in construction and machinery assembly, as the larger pitch allows for faster engagement when threading.

The characteristics of coarse threads make them distinct from fine threads, which are used when higher precision and tighter control are required. The application focus of coarse threads often means they are used in a wider range of general and heavy-duty applications, but this is not a defining characteristic of coarse threads alone; rather, it reflects their practical benefits in various contexts.