What type of thread is commonly used for strength, cut square on one side and slanting on the other?

The Buttress thread is specifically designed for applications where axial load is significant, providing strength and high resistance to forces applied in one direction while still maintaining ease of manufacturing and assembly. The unique profile of the Buttress thread features one side that is vertical (or cut square) and the other that slopes, which helps in accommodating thrust loads effectively while minimizing the chance of thread stripping.

This design is especially beneficial in applications such as machinery and tooling, where the threads need to endure high levels of stress. The inclined side allows for a more pronounced bearing area, enhancing the strength and load-carrying capacity compared to standard threads. The square cut on one side ensures positive engagement, reducing wear and potential failure under heavy load conditions.

In contrast, other thread types like Square and Double threads have different profiles and purposes. Square threads are more suited for power transmission, while Double threads provide a faster lead but do not offer the same strength in one direction that Buttress threads do. The Janno thread is less commonly referenced or used compared to the others and does not have the same industrial application as Buttress threads. Thus, the choice of Buttress threads is essential for ensuring robustness and reliability in specific mechanical contexts.