9 Popular Thread Types and Uses
9 Popular Thread Types and Uses
This shows a variety of threaded rods with different thread types. Here’s the description:
- Acme thread: A coarse, single-start thread with a trapezoidal profile, commonly used for applications requiring high strength and low friction, such as lead screws and jacks.
- Modified square thread: A square thread with slightly rounded edges, used for applications requiring high strength and precise positioning, such as vises and machine tool feedscrews.
- Buttress thread: An asymmetric, single-start thread with a wider load-bearing flank on one side, used for applications where the thread is subjected to primarily one-directional forces, such as machine tool feedscrews and bottle caps.
- Sharp V thread: A triangular thread profile with a 60-degree included angle, commonly used for fasteners and general-purpose applications.
- Worm thread: A single-start thread with a helical groove on one side and a mating gear on the other, used for creating large mechanical advantage and precise positioning, such as clamps and vises.
- Knuckle thread: A thread with a rounded top and bottom profile, used for applications requiring frequent assembly and disassembly, such as pipe fittings and furniture.
- Metric threads: These threads are measured in millimeters and are characterized by their specific pitch (distance between threads) and diameter. In the image, the specific metrics are not labelled.
- Inch threads: These threads are measured in inches and fractions of an inch, and are designated by a number followed by a hyphen and a letter indicating the thread diameter and thread series. Similar to the metric threads, the specific inch thread designations are not labelled in the image.
- Whitworth threads: An obsolete thread standard originating in the United Kingdom, rarely used in modern applications.
It is important to note that the specific terminology used to describe these threads may vary depending on the source or region.
Overall, this is a variety of thread types commonly used in different mechanical and industrial applications. The different thread designs offer unique advantages and disadvantages depending on the specific needs of the application.